I'm a fan of Indie Retail Academy. Honestly, it's 67% because I like how Claire writes. She always manages to make me laugh a bit, which is probably hard to do when talking about wholesale. Claire just launched a HUGE, free program with "16000 words, 99 pages and 120 minutes of audio which tell you everything you need to know to get started in wholesale." Claire runs a brick & mortar store, so it's a nice, fresh perspective. See all the details here.