Mastering the Magic of Spreadsheets
Like Duolingo, but for Mastering the Magic of Spreadsheets. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in Mastering the Magic of Spreadsheets
- Headers need visual contrast like bolding or fill colors
- Excel stores dates as sequential serial numbers
- Visual hierarchy helps separate labels from values
- Changing the cell format back to 'Date' restores the readable version
- Merge and Center physically combines cells and can break sorting
- Hashtags indicate the column is too narrow for the numeric data
- Center Across Selection provides the visual look of a merge without changing the cell structure
- Double-clicking the boundary between column headers triggers AutoFit
- Understanding why dates turn into five-digit numbers
- Choosing between Merge and Center and Center Across Selection
- Fastest way to adjust column widths for hidden data
- Format Painter is for one-off copying
- Applying the 'Currency' or 'Accounting' format via the Ribbon
- Cell Styles ensure consistency across different workbooks
- Typing only numbers and letting Excel add the symbols automatically
- Applying consistent styles quickly
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 Mastering the Magic of Spreadsheets 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.
If you want your column titles to jump out at a reader immediately, what should you do to them?
Get it right to open this lesson and 87 more in the app.
Where Mastering the Magic of Spreadsheets takes you
Stop fighting with rows and columns and start making them work for you. Learn to organize your life, automate your math, and turn messy data into clear answers in minutes.
- 1
Get Your First Wins
- Making Your First List Look Professional
- The Secret to Never Doing Math Twice
- Fixing Mistakes Without Starting Over
- Printing Your Work Without Cutting Off Columns
- 2
Make the Computer Do the Hard Work
- Adding Up Thousands of Rows Instantly
- Finding Averages and Totals Without a Calculator
- Copying Your Work Down a Long List
- Using Shortcuts to Move Like a Pro
- Cleaning Up Messy Names and Dates
- Letting Excel Fill in the Blanks for You
- 3
Organize and Find Anything
- Sorting Your Data from A to Z
- Filtering Out the Noise to Find One Item
- Freezing Rows So You Never Lose Your Place
- 4
Tell a Story with Pictures
- Turning Numbers into a Simple Bar Chart
- Showing Trends with Line Graphs
- Highlighting Important Cells Automatically
- Choosing the Right Chart for Your Data
- Making Your Charts Look Beautiful
- 5
The Brains Behind the Cells
- How Excel Thinks About Numbers vs Text
- The Power of If-Then Logic
- Connecting Different Sheets Together
- Protecting Your Work from Unwanted Changes
5 sections · 22 units · 88 levels. Built to play, not to enroll.
You pick the voice
Mastering the Magic of Spreadsheets is taught in the Explain Like I'm 5 style: no big words. promise.. 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 Mastering the Magic of Spreadsheets today.
Download Tomo, search Mastering the Magic of Spreadsheets, and play your first lesson in under a minute.