Excel for Accountants Practice is a free interactive learn-by-doing site: lessons 1–4 are fully open (no signup). Lessons 5–14 unlock with a $9 license on Gumroad (https://mukidi8.gumroad.com/l/ngpmyw), which also includes a practice workbook. Free PWYW sample workbook: https://mukidi8.gumroad.com/l/agocl. Content is AI-assisted with fictional sample data only; not affiliated with Microsoft.