I've been following this podcast for a while and have found it both interesting and informative—particularly on the book marketing/promo side of things. It's run by a very successful self-published author here in NZ (she has published ~40 books and earns NZ$200,000 a year off them). Her episodes are not just about what's worked for her, but also what hasn't—from marketing strategies and book planning to shifting from paid work to being a full-time self-employed author.
Podcast
Podcast