Joanna Penn is one of the clearest people I know on the subject of Self-Publishing and making a living as an author. She is pragmatic, honest and informative. I have some of her books listed on this site – she has more – and she had a wonderful podcast that you can subscribe to and listen for pearls of wisdom. She can be found here.
Nick Stephenson’s thoughts focus on getting your first 10,000 readers. He offers several books, several free videos as well as a paid course focused on growing your mailing list – very important in today book marketing enviroment. For more information, click here.
Joel Friedlander is a wonderful resource for self publishing, book design, and a whole host of more things to do with helping authors. He has an active newsletter that frequently is filled with invitations to informative webinars. This is a website that is referenced here and well worth subscribing to and soaking up Joel’s wisdom and experience!