Hugh C. Howey‘s Wool is fantastic science fiction and one of the most famous self-published books. See his website/blog at http://www.hughhowey.com.
Check out T.M. Hunter‘s blog a http://www.astonwest.com. His Aston West series are fun, fast paced space operas.
Audra Middleton‘s blog is at http://www.audramiddleton.com. She wrote Hitchhiker that I reviewed in April, 2014.
K.M. Tolan’s website is at http://www.kmtolan.com. I reviewed his book Waiting Weapon in August, 2014.
Blogs about the writing business:
JA Konrath’s blog details his journey from being legacy published to a very successful self-published author. http://jakonrath.blogspot.com/