When it comes to publishing and marketing your book, aside from Seth Godin, I highly recommend listening to the bi-weekly podcasts by Joanna Penn called The Creative Penn.
Now with 134 current individual podcasts in this series, Joanna interviews authors and leaders in the publishing industry. She covers publishing options, inspiration, the nuts-and-bolts on writing, and of course marketing your book.
Her joyful, lovable style and positive attitude is addicting, and her interviews dive right into the meat of the matter. Aside from a podcaster, she's an accomplished thriller writer herself (writting under the pen name J. F. Penn) and has many products she lends her talents to for aspiring authors.
She's interviewed authors and leaders such as:
J. C. Hutchins
Dean Wesley Smith
Be sure to subscribe to her podcast and learn to take your writing towards successful publication.