What annotating a book means
Annotating a book means adding notes, marks or highlights while you read: underlining a line, writing a reaction in the margin, flagging a page with a tab. The goal is to record your thinking so you can return to it later. Annotations work for novels, nonfiction, textbooks and poetry.
You do not need to be a scholar or own special supplies. A pencil and a few sticky notes are enough, and annotating for fun can be as simple as marking whatever moves you. If you like to read with a group, annotations also help you find passages to discuss, whether at a table or in an online book club.
Before you start: should you write in this book?
Not every book is a good candidate.
- Do not write in books that are not yours, such as library or borrowed copies.
- Think twice about rare, signed or valuable copies. Marks can lower their value.
- Decide what you want from annotating. Is it study, book club prep, keeping favorite quotes, or simply enjoying the process?
- Notice what makes you hesitate. If permanent marks bother you, choose methods that can be removed, like sticky flags or pencil.
Your method should fit your goal, not the other way around.
Annotation categories for fiction
Categories are the types of things you decide to mark. Pick a handful rather than trying to track everything. Common fiction categories include:
- Favorite quotes: lines that are beautiful, funny or wise.
- Character development: introductions, motives, backstory and changes over time.
- Emotional reactions: moments that make you laugh, cry, gasp or get frustrated.
- World-building: settings, rules, lore and details of the story’s world.
- Plot turns: twists, reveals and major events.
- Foreshadowing and clues: hints about what may happen later, which is especially fun in mysteries, thrillers and fantasy.
- Themes and symbols: repeated images or ideas.
- Romance moments: tension, chemistry or key scenes, for readers who track them.
- Words to look up: unfamiliar vocabulary.
Annotation categories for nonfiction
Nonfiction readers often annotate to learn and remember. Useful categories include:
- Core concepts and definitions: key terms and main ideas.
- Key arguments and evidence: the author’s claims and the data or examples supporting them.
- Questions and disagreements: places where you want more proof or disagree.
- Real-life connections: ways to apply or relate the material to your own experience.
- Sources to follow up: studies, books or statistics you want to check later.
- Summaries: a line at the end of each chapter in your own words.
In nonfiction, sidebars, charts and appendices can all be annotated too. Our overview of the parts of a book explains these features. And an index is a handy place to check whether a topic you annotated appears elsewhere.
Five steps to annotate a book
The steps below are a simple method rather than a formal standard.
- Pick your purpose. Study, pleasure, discussion or writing craft all call for different kinds of notes.
- Choose your tools. Decide whether you will write in the book or use tabs and sticky notes.
- Create a key. Assign a small set of colors or symbols to your categories. Keep the key short enough to remember, or write it on a bookmark.
- Mark as you read. Annotate lightly. If the notes interrupt the story so much that you enjoy it less, mark fewer things.
- Review. After a chapter or at the end, look back over your marks and add a brief summary or question. This is where annotations pay off.
Tools: pens, pencils, tabs and sticky notes
- Pencil: erasable and shows less through the page. Graphite can smudge over time with handling.
- Gel or rollerball pens: dry quickly and need little pressure, but any ink may show through thin paper.
- Highlighters: fast and visible, though they can bleed on thin pages and are hard to undo.
- Sticky flags and tabs: good for marking a spot by color. Translucent tabs let you highlight a line without touching the page.
- Sticky notes: give you more space than margins. Adhesive can leave residue if left on for years, so some readers prefer paper slips or paperclips for long-term storage.
A sample tab key might use one color for favorite quotes, another for character moments, another for world-building and another for questions. Any set of colors works as long as you are consistent.
Annotating without marking the page
If you do not want to write in the book:
- Use removable tabs and flags.
- Keep a reading journal or notes app, with page numbers beside each note.
- Use the highlighting and note features of an e-reader, which often export your notes.
- Photograph a page and add a note, if the book is yours and you are keeping it for personal use.
Examples of good annotations
Good annotations are specific and short. They might look like:
- A star beside a line with the note “echoes the opening scene”.
- A question mark and “Why does she lie here?” in the margin.
- “Evidence?” next to a surprising statistic.
- A word circled with “look up” above it.
- A one-line summary at the end of a chapter.
- A short answer to a prompt, such as those in our reading response questions for any book.
There is no correct format, and notes written for yourself do not have to be neat.
What is an annotated edition?
An annotated edition is a published version of a book with commentary added, often by an editor or scholar. The notes might explain historical references, define older words, point out allusions or give background on the author. Annotated editions of classics are common, and they pair well with the picks in our list of classics for book groups. They are different from your own annotations, though you may find them helpful as a model of what to notice.
Frequently asked questions
What are the 5 steps of annotation?
One simple version: pick a purpose, choose tools, create a key, mark as you read, and review your notes afterward.
What are some good annotations?
Short, specific notes: a reaction, a question, a link to another part of the book, or a summary in your own words.
What are some suggested items to annotate?
Favorite quotes, character changes, key arguments, definitions, unfamiliar words, foreshadowing and anything you want to discuss or look up.
Is it okay to annotate a library book?
No. Use a separate notebook or removable flags, if the library allows them, and return the book unmarked.