There is a network in Linkedin site who can help you in publishing digital books,ebook etc.but first of all register in the Linkedin.com and then search for the groups option where you can search for ebooks,ebook publishing group. there different authors who have already published their book can help you. Regards
If you want to publish the e-book without any copyright then please create a new website of your own and then publish. Otherwise please contact free e-book publishers in the website to publish the website.