SheetTutor

SheetTutor is a free, English-language website for learning Excel through interactive spreadsheet tasks. Learners edit cells and formulas in the browser, check their work, explore function references and original worked examples, and download practice workbooks. Existing free content remains free, with no account or software installation required. Built with React, TanStack Start, TypeScript and the Univer spreadsheet engine on Cloudflare Workers.