Build Your First Bookshelf
Stop buying flat-pack furniture and start building pieces that last a lifetime. Master the art of manual woodworking by creating a beautiful, sturdy bookshelf from scratch.
Like Duolingo, but for Build Your First Bookshelf. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
185 levels across 9 sections, about 370 minutes end to end, roughly 74 days at five minutes a day. It moves through Your First Cut, Putting It Together, The Art of Accuracy, Shelving Options, Picking Your Lumber, Smoothing and Sanding, Making It Shine, Advanced Touches, and The Science of Wood. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in Build Your First Bookshelf
- A pencil line has a physical width that creates ambiguity
- A knife cut severs wood fibers to create a physical track for the saw
- Knife lines act as a physical barrier for wood fibers
- Pre-cutting fibers prevents them from being pulled and torn by the saw
- Marking knife vs Pencil
- The purpose of a knife wall
- The stock must be pressed firmly against a known flat reference face
- A single reference face ensures consistency across all parts
- The purpose of a knife wall in preventing splintering
- Gaps between the square and the edge result in non-perpendicular lines
- How to properly reference a square against a board
- Measuring from different sides introduces errors if the board isn't perfectly square
- The concept of a reference face to prevent cumulative error
- The knife defines the point first
- Knives are for precision and fiber management
- Properly referencing a square
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Build Your First Bookshelf the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
You're aiming for a perfect fit, but your pencil line looks like a wide highway. Why is this a problem for precision?
Get it right to open this lesson and 184 more in the app.
How to learn Build Your First Bookshelf, step by step
Go in order. 185 short levels across 9 sections, about 6 hours 10 minutes in all, five minutes a day.
- 1
Your First Cut
- Marking a straight line that actually stays straight
- How to use a hand saw without getting stuck
- The secret to sawing perfectly square edges
- Fixing a crooked cut with a hand plane
- 2
Putting It Together
- Choosing the right screws and nails for your wood
- Why wood glue is stronger than you think
- Using clamps to keep things from sliding
- Hiding your mistakes with wood filler
- Building a basic box frame
- 3
The Art of Accuracy
- Measuring twice so you only cut once
- Checking for 'square' using the 3-4-5 rule
- Dealing with wood that isn't perfectly flat
- 4
Shelving Options
- Fixed shelves vs. adjustable shelves
- Cutting grooves to hold your shelves
- Using simple pegs for moveable levels
- How much weight can your shelf actually hold?
- 5
Picking Your Lumber
- Softwoods vs. Hardwoods: Which is for you?
- Reading the grain to prevent warping
- What to look for at the lumber yard
- The difference between Pine, Oak, and Walnut
- Why '2x4' doesn't actually mean two inches by four inches
- Storing wood so it stays straight
- 6
Smoothing and Sanding
- The grit ladder: From rough to silky smooth
- Sanding by hand without losing your mind
- Cleaning off dust for a perfect finish
- 7
Making It Shine
- Staining wood to change its color
- Applying oil for a natural look
- Protecting your work with polyurethane
- How to paint furniture without brush marks
- Waxing for that professional feel
- 8
Advanced Touches
- Adding a back panel for extra strength
- Decorative trim and molding
- Securing your bookshelf to the wall safely
- Signing and dating your masterpiece
- 9
The Science of Wood
- How trees grow and why it matters
- Understanding wood movement and humidity
- The history of joinery before screws existed
9 sections · 37 units · 185 levels. Built to play, not to enroll.
Questions about Build Your First Bookshelf
How do I learn Build Your First Bookshelf?
Go in order: start with Your First Cut, then Putting It Together, then The Art of Accuracy, then Shelving Options, and 5 more sections after that. On Tomo that's 185 short levels, about 6 hours 10 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Build Your First Bookshelf?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Build Your First Bookshelf is one of its free courses, and you can type any other topic to get a course of your own.
Is the Build Your First Bookshelf course free?
Yes. Build Your First Bookshelf is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Build Your First Bookshelf?
185 levels across 9 sections, about 6 hours 10 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Build Your First Bookshelf?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Build Your First Bookshelf is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Build Your First Bookshelf today.
Download Tomo, search Build Your First Bookshelf, and play your first lesson in under a minute.