Lecture PDFs Are Useless Until You Do This: A 2026 Notes System for College

A lecture PDF straight from the LMS is a dead document. You scroll through it once, retain about twenty percent, and forget where the file ended up by week six. Then the midterm hits, you go looking for Tuesday's slides, and they are in three places, none of them annotated. Most students try to fix this by buying Notability and switching everything to iPad. That works if you have an iPad. If you have a laptop and a phone, you need a different system.

This guide is the system. Notability-style note-taking on PDF lectures (pen, photo insertion, links, merge) running free in any browser on any device. Plus folder structure that holds up across a semester, three note-taking methods matched to subject type, a before-during-after-class workflow, pre-exam consolidation, mobile study between classes, and group note-sharing. Everything is free. Most works on phone.

The Notability-style workflow, in any browser

Notability earned its reputation in student circles by combining four things in one app: write on PDFs with a stylus, type or draw notes freely, drop in photos from your camera roll, and keep everything searchable. The iPad-plus-Apple-Pencil experience is genuinely good. The problem is the iPad. If you study on a Chromebook, a Windows laptop, a Mac without an iPad, or your phone, Notability is not an option. Even on iPad, the subscription is real money over a four-year degree.

Editly on iHatePDF gives you the same four core capabilities free in any browser:

• Write on PDFs with a pen. Apple Pencil, Surface Pen, S Pen, Wacom, finger on touchscreen, mouse, or trackpad. All input methods supported. Draw arrows, circle terms, work out equations in the margin, sketch diagrams next to printed ones.
• Add text and sticky notes anywhere. Type margin clarifications, drop sticky notes on confusing parts to come back to later, leave summary blocks at the end of each lecture.
• Insert photos from your camera roll. Snap a textbook figure, a whiteboard, a classmate's handwritten notes, a slide from a YouTube video. Drop the image into the relevant page in Editly. The photo lives inside the lecture PDF as part of the file.
• Add clickable links to external resources. Link a confusing slide to the YouTube explainer that finally made it click, link from a summary page to your other notes in Google Drive, link from a reference to a Wikipedia article. The links open in the browser when you (or anyone you share the file with) click them.
• Change the page background to lined, grid, dotted, or blank paper. The same paper-texture options Notability and GoodNotes offer for their notebook pages. Insert a blank page in Editly, apply lined paper for handwritten notes, grid paper for diagrams and equations, dotted paper for sketches and mind maps, or plain colour backgrounds for highlighter visibility. Useful when you want handwriting room that looks like a real notebook page next to the printed lecture slide.

What Editly does not do that Notability does: audio recording synced to handwriting (some students love this, most do not use it), and the polished native-app pen feel that any browser-based tool inevitably falls slightly short of. For the typical college workflow, the gap is small and the price-and-device flexibility wins.

Set up your semester folder structure

The folder system has to fit how lectures actually happen: you go to courses, courses have weeks, weeks have lectures. Match the folders to that reality.

Top level on your laptop and cloud storage (Google Drive, OneDrive, iCloud, whichever you use):

• School
  • Fall-2026
    • CS201-Algorithms
    • MATH240-Linear-Algebra
    • ECON101-Microeconomics
    • PSYC100-Intro-Psychology
  • Spring-2027

Inside each course folder, four subfolders:

• Lectures: original lecture PDFs and your annotated versions
• Readings: textbook chapters, papers, supplementary PDFs
• Assignments: problem sets, essays, submitted work
• Exam-Prep: merged study packs, cheat sheets, practice papers

File naming is where most students lose hours later. Stick to one format:

• CS201_W03_L01_Sorting.pdf (week 3, lecture 1, topic)
• CS201_W03_L01_Sorting_annotated.pdf (your version)
• MATH240_W05_Problem-Set-2.pdf (assignments)
• CS201_Midterm-Prep_Topics1-5.pdf (merged study pack)

Searching CS201_W03 across the whole semester pulls everything from that week instantly. Searching annotated shows every PDF you have personally worked through. Boring to set up, pays off in week eleven when finals start.

Three note-taking systems, when to use each

Note-taking is not one skill. Different subjects need different structures. Pick the one that fits the material instead of forcing every course into the same template.

The Cornell method (for content-heavy lectures)

Split each page into three zones: a narrow left column for cue words and questions, a main right area for the lecture content, and a summary band at the bottom. During the lecture, fill the main area. After class, write cue words on the left that prompt recall of the main content, and a one-paragraph summary at the bottom. To self-test, cover the main area and use the cues alone to reconstruct what was on the page.

Best for: history, psychology, biology, law, anything memorisation-heavy with concept-name pairings. With a PDF lecture, add Cornell structure by inserting a blank page after each slide in Editly and drawing the three zones with the pen tool.

The outline method (for hierarchical content)

Main topic at the left margin, subtopics indented one tab, supporting points indented two tabs, examples indented three tabs. The visual hierarchy reflects the conceptual hierarchy.

Best for: computer science, philosophy, business, anything with clear nesting (algorithms, frameworks, classifications). With lecture slides already structured this way, annotate directly on the existing slides instead of rewriting from scratch.

Mind maps (for relational content)

Central concept in the middle, branches radiating out for related concepts, sub-branches for details. Useful when the material is about relationships and connections rather than sequences. Best for: literature themes, anatomy systems, business strategy, anything where the structure is a web rather than a list. Draw mind maps freehand on a tablet or paper, photograph them, and insert the images into your lecture PDF using Editly so they live alongside the rest of the course notes.

The annotation toolkit, in detail

A PDF straight from the LMS is dead content. Annotation is what changes the document from passive to active. Here is the toolkit and how to use each piece for academic notes.

Pen and stylus (the Notability core feature)

The pen tool in Editly works with every input method. Open the article on an iPad in Safari and use Apple Pencil. Open it on a Surface Pro with Surface Pen. Open it on a Galaxy Tab with S Pen. Open it on a Chromebook with the trackpad. The pen tool responds to all of them. Pick a colour. Pick a thickness. Draw.

Pen use that pays off in college:

• Draw arrows between related concepts on the same slide. The arrow is what your brain encodes as "these connect", and it lives in the slide forever.
• Circle key terms instead of highlighting them, so the highlight does not lose meaning from overuse.
• Work out equations in the margin during the lecture. Write the steps. When you study the file later, your work is there alongside the printed equation.
• Sketch your own diagram next to the professor's diagram if theirs did not click. The two side by side beats either alone.
• Add quick handwritten symbols, question marks, exclamation points, stars for "important", that you type-style annotations cannot match for speed during a fast lecture.

Photo insertion (your secret weapon)

The image insertion tool is the single most underused feature in PDF annotation and the highest-leverage one for visual subjects. Three workflows that change how you study.

The textbook diagram swap. The lecture slide explains the Krebs cycle one way. The textbook explains it differently with a clearer diagram. Snap the textbook page with your phone, sync to your laptop, drop the image into Editly on the relevant lecture slide. Now both versions live on the same page. When you study, the page that did not make sense before clicks because the textbook diagram is right next to the lecture version.

The whiteboard capture. The professor draws something on the whiteboard that did not make it onto the slides. Take a photo before they erase. Insert the photo into the lecture PDF in the right spot. You now have the missing piece of the lecture as part of the canonical file, not lost in your camera roll.

The classmate's handwritten notes. You missed a class. A classmate has handwritten notes. Snap their notebook pages, drop the photos into your lecture PDF where that lecture would have been. You now have a complete set without rewriting their work or copying it badly. Reciprocate next time they miss.

Clickable links to external resources

Editly lets you add hyperlinks anywhere in the PDF. Add a text annotation that says "Khan Academy explainer" or "lab walkthrough video", select the text, attach the URL. When you open the file later in any PDF reader (including the mobile browser), clicking the linked text opens the resource.

Link patterns that change how your notes work:

• Confusing slide → YouTube explainer that made it click. Future you will thank past you.
• Definition slide → Wikipedia article for depth.
• Topic slide → your other notes file in Google Drive, so related material is one click away.
• Equation slide → Wolfram Alpha or Desmos with the equation pre-loaded.
• Concept slide → Anki deck or Quizlet for spaced repetition flashcards.

Page backgrounds and paper textures

Notability and GoodNotes built their notebook feel on paper-texture backgrounds: lined paper, grid paper, dotted paper, music staff paper. Editly supports the same backgrounds on any PDF page. Insert a blank page, then change its background to whatever fits the work you are doing on that page.

When to use each paper type:

• Lined paper for paragraph-style handwritten notes, Feynman explanations, Cornell-method content area, anything where your handwriting wants horizontal guidance.
• Grid paper for maths and engineering courses: graphs, vector diagrams, free-body diagrams, equation work where alignment matters.
• Dotted paper for sketches, mind maps, flow charts, architecture diagrams, anything where you want light visual reference without strong lines.
• Music staff for music theory and composition courses.
• Plain colour backgrounds for pages where you want highlighter colours to pop more, or where you are building a cheat sheet that should look distinct from lecture slides.

You can also change the background of an existing lecture slide, useful when the original is on a dark background that does not print well or where the colour contrast fights your highlights. Pick a clean off-white or cream background, save, the slide reads better for studying.

Highlighter (use a colour code)

Highlighting is the most overused annotation tool. If everything is highlighted, nothing is. Use a colour code: yellow for definitions, green for examples, pink for points the professor stressed, blue for things you do not yet understand. Two colours minimum, four maximum. Editly supports highlight in any colour.

Text notes and sticky comments

Type margin notes for things the professor said that did not make it onto the slide. Use a colour distinct from the slide content so your notes are visually obvious. Drop sticky comments on parts you do not understand, with a short note about what is unclear. Review the sticky notes at the end of the week and take the unresolved ones to office hours or a study group.

New blank pages

Insert blank pages anywhere in the PDF using Editly's page operations. At the end of each lecture, add a one-page summary in your own words. At the end of a unit, add a worked-example page with two or three problems you solved on your own. The blank pages become part of the file, exported and merged with everything else. This is where Cornell summaries and Feynman-style explanations live.

The before-during-after-class workflow

Most students only do the during-class part. The students who get top grades do the before and after parts too, and those parts take less time than the lecture itself.

Before class (5 to 10 minutes)

• Download the lecture PDF from the LMS. Save it with your naming convention.
• Skim the headings only. Do not read the content yet.
• Write three to five questions you expect the lecture to answer. Put them on a sticky note or a new blank page at the start of the PDF.
• Glance at the previous lecture's summary page if you wrote one.

During class (the lecture itself)

• Open the PDF in Editly on your laptop, tablet, or phone.
• Highlight what the professor emphasises (verbal stress, repetition, "this will be on the exam" hints).
• Use the pen to draw arrows, circle terms, work out equations as the professor does them.
• Type or write clarifications the professor says that are not on the slides.
• Snap a phone photo of any whiteboard work the slides do not capture. You will insert it after class.
• Drop sticky notes on anything that confuses you. Do not stop the lecture to fix it.

After class (10 to 15 minutes, same day if possible)

• Insert the whiteboard photos you took into the relevant pages.
• Find a YouTube or Khan Academy explainer for the most confusing concept of the lecture. Add it as a clickable link on the relevant slide.
• Review your sticky notes. Resolve as many as you can with the textbook or a quick search. Mark the rest for office hours.
• Add a one-paragraph summary on a new blank page at the end of the lecture PDF, in your own words.
• Answer your pre-class questions on the same summary page.
• Rename the file with the _annotated suffix and save it back to your course folder.

End-of-week consolidation

Once a week, ideally Friday afternoon or Sunday evening, spend 15 minutes per course consolidating.

• Open merge PDF and drag the week's annotated lectures in chronological order.
• Save as COURSE_W03_Week.pdf in the Exam-Prep folder.
• Open the merged file. Add a new blank page at the start.
• Write a one-page weekly summary covering all lectures of the week, in your own words. Identify the three most important concepts.
• Review unresolved sticky notes. Add to your office-hours list or study-group agenda.

By week ten you have ten weekly summary PDFs per course, each one a self-contained review of that week. This is the foundation of fast exam prep.

Pre-exam consolidation and cheat sheets

Two weeks before a midterm or final, switch from weekly consolidation to topic consolidation.

• List the exam topics from the course syllabus or the professor's review sheet.
• For each topic, identify which weekly PDFs contain the relevant lectures.
• Use split PDF to extract just the relevant pages from each weekly file.
• Merge the extracted pages into one topic PDF, named COURSE_Midterm_Topic-1.pdf.
• Add a new blank summary page at the start with the topic's three to five most important concepts in your own words.
• Build a one-page cheat sheet for each topic: formulas, definitions, worked examples, key dates. Even if your exam does not allow notes, building the sheet is one of the highest-yield study activities.

Going into the exam with one topic PDF per topic plus one cheat sheet per topic, all built from your own annotated notes, beats reading the textbook cover to cover. The active reconstruction is the study.

Study techniques that work with PDF notes

Active recall (the blurt method)

Read a lecture once with light annotation. Close the PDF. Open a blank page on paper or a text file. Write everything you can remember. Open the PDF, compare, mark gaps with sticky notes. Restudy only the gaps. Repeat the blurt the next day. Beats rereading by a documented margin in cognitive science research.

Spaced repetition

After the initial blurt, review the lecture summary page after one day, three days, seven days, and fourteen days. Spaced reviews fight the forgetting curve. The summary page is short enough that each review takes minutes, not hours.

Self-testing with redacted PDFs

Open the lecture PDF in redact PDF. Redact the key terms, dates, or formulas (permanent removal, not just covering). Save as a new file with _blank suffix. Use the redacted version as a self-test where you fill in the blanks from memory. Faster than building flashcards and uses material you already have.

The Feynman technique

Take one concept from a lecture. Open a new blank page in your annotated PDF. Write or pen-draw an explanation as if teaching it to a high-school student, no jargon, no shortcuts. When you hit a gap (a place where you cannot explain clearly), that is the part you do not actually understand. Restudy that part, rewrite the explanation. Repeat until the explanation flows. Tests whether you understand a topic or just recognise it.

Mobile workflow for studying between classes

Most study time is not the long Sunday session at the library. It is fifteen minutes on the bus, ten minutes before the next lecture, eight minutes waiting for a meeting. Set up your workflow so this time is usable.

• Sync your cloud storage folder to your phone. Course PDFs follow you everywhere.
• Use iHatePDF in your mobile browser. Annotation tools work with touch input. No app install needed.
• For short windows, review summary pages and cheat sheets. Save the deep work for longer sessions.
• The lecture PDF you annotated on laptop on Tuesday is the same file you study from on phone Wednesday. One canonical version.
• If your file is too large for mobile, run it through compress PDF first to shrink it without quality loss.

Group study and sharing notes

Comparing notes with classmates fills the gaps in your own. Three patterns work well.

The annotated-PDF swap. Trade annotated lecture PDFs with a study buddy for the lectures you each missed or struggled with. Their highlights, sticky notes, photo insertions, and worked examples on top of the same base slides give you a different angle without rewriting the lecture.

The merged group pack. Each group member writes the summary page for one week of the semester. Merge all the summary pages into a single group study pack. Six people, twelve weeks, two summaries each. Everyone gets twelve well-written summaries for fifteen minutes of work.

The blurt comparison. Each person does the blurt method for the same lecture independently, then meet and compare. Whatever appears in three out of four blurts is genuinely important. Whatever appears in only one is either niche or worth restudying. Quick way to identify the high-yield content.

Share files by emailing the annotated PDF, by sending an iHatePDF share-by-link URL (35-minute expiry, useful when files are too large for email or when you want recipients to grab once), or by dropping into a shared Drive folder. For collaborative editing, the shared-folder approach with each person's named copy alongside the original works better than passing one file back and forth.

End of semester: archive and reuse

When the semester ends, do not let the work evaporate. Future courses build on past ones.

• Merge all weekly summary PDFs for each course into one course-summary PDF. Save in an Archive folder for the semester.
• Pull out cheat sheets and topic summaries into a personal Reference folder. Index them by subject area, not by course code, so they are findable in two years when a senior course assumes you remember introductory material.
• Delete duplicates, screenshot scraps, and abandoned drafts. Keep only the canonical annotated versions.
• Compress large PDFs you want to keep but rarely open, using compress PDF to free up cloud storage without losing the content.

Frequently asked questions