Start with How To Convert Customers With Cold Emails (33 min, Y Combinator), then Substack Growth Guide (17 min, Jade Beason). All 37 lessons here are free, from the teachers' own official uploads. You'll need laptop stand, noise-cancelling headphones, second monitor and a few more basics (about $270 of kit). The book to keep beside you: Everybody Writes by Ann Handley.