Five-minute drills in a real spreadsheet or a real SQL database, right here in your browser. You write the formula or the query, it's checked instantly, and when it's wrong you see why. No install, no 40-minute videos.
Works on Mac, Windows and your phone. Nothing to download.
Mike bought a Latte. In E2, write a formula that looks up its price in the menu.
Each track starts with a free level test that tells you where you are, then short lessons that fill the gaps.
From SUM and IF to VLOOKUP, XLOOKUP and SUMIFS, solved in a real spreadsheet.
Free: level test + lessons 1–2
SELECT to JOINs and subqueries, then designing tables yourself: keys and relationships.
Free: level test + lessons 1–4
Apple's real 10-K in a spreadsheet: margins, EPS, P/E and P/B, plus candlestick charts.
Free: quiz + lessons 1, 2 and 7
Each lesson is a handful of small problems. You solve them the same way you would at work: in a sheet or in a SQL editor.
"Find the price of a Latte." No theory dump. Just the thing you'd actually have to do on a Tuesday.
In a real grid or a real SQL database, with real data. Click cells to add them to your formula, like in Excel.
Right answer turns green. Wrong one tells you why, not just "incorrect". Hints if you're stuck.
Lessons 1 and 2 are free, forever. Pro unlocks the rest, including every lesson as it comes out. The SQL and finance paths have their own pages.
Your first formulas. 6 drills
IF, nested IF, AND/OR. 7 drills
Exact match, the #N/A trap. 6 drills
Look up in any direction. 6 drills
Totals with conditions. 7 drills
Summarize 10,000 rows in 30 seconds
EOMONTH, NETWORKDAYS, cleaning strings
Plus the Excel interview prep track
One price for all three tracks, paid once. No subscription.