Deserves its own Ask HN.
13 karma · joined December 5, 2023
No frills, 6.5 hours of digestible videos, 30+ functions/formulas, enough theory to help you learn on your own. Writing complex formulas in Excel was my gateway to proper software development. It's a useful skill even now as a developer, working with data in CSVs, making small tools for quick automation, things like that. (Just don't make a CRM in Excel, lol.)