After publication, what's the most important thing an author can do to market his book?1) Establish an internet presence that includes book cover, blurb, links to online stores, author photo and author bio. Keeping that presence fresh and new with contests, blot or whatever, also helps.
2) Get business cards with your book cover on it and give it to everyone you meet. Tell EVERYONE you know when the book is released.
3) Do public appearances—book signings, book clubs, school visits, firesides, workshops, etc.