Book excerpt: You’ve written a wonderful book. But you know that it won’t sell itself. You need to let folks know just how good your book is, why they should care about it, and why they must choose your book over millions of others. This is a step-by-step, short, pragmatic guide on how to establish yourself as an expert and a leader on one of the largest social networks—LinkedIn. Keywords: author platform, self-publishing, book publishing, social media, blogging, book advertising, LinkedIn, free, freebie