I am a member of GoodReads, and if you are an author, you should be, too! Set up your profile first as a reader, then as an author. GoodReads will link your accounts together for you. Thousands of readers are members that absolutely love books and new authors. Book clubs have been formed around reading, and finding new authors and books. If you want to be seen, this is the place to do it!
If you have an e-book, head on over to CreateSpace to get your hard cover printed and ready for giveaways. The outlay is minimal. If you want a proof copy, you’ll have to pay for that, but the rest of the copies can be print on demand. Then you are all set for your book giveaway on GoodReads! GR is the best social network for all writers, including self-publishing authors.