If you're already a Google Books partner, just upload the book to your account as normal so you can start seeing detailed reporting on the number of visits to that book and "Buy this Book" clicks. You'll also be able to include your logo on the page along with a link back to your website. In addition, users will now be able to browse the book in Limited Preview. If you're thinking about bringing a book back into print, Google Books can give you unique real-world insight into its potential.
If you're not yet a partner, sign up for the Google Books Partner Program and submit the book to us that way. Instead of finding bibliographic information or snippets of text when they view your book, they'll instead be able to browse the book in our Limited Preview mode. The book will also appear in your own Google Books account, where you can view reports on how many users are viewing the book and clicking on the "Buy this Book" links.