Below are some of the links I have found useful since I started the self-publishing experience…
E-Book Advertisers
Addicted to ebooks: http://addictedtoebooks.com/free
Bargain ebook hunter: http://bargainebookhunter.com/contact-us/
Digital Book today: http://digitalbooktoday.com/12-top-100-submit-your-free-book-to-be-included-on-this-list/
E-reader IQ: http://www.ereaderiq.com/contact/
E-reader news today: http://ereadernewstoday.com/ent-free-book-submissions/
Flurries of Words: http://flurriesofwords.blogspot.co.uk/
Freebooksy: http://www.freebooksy.com/editorial-submissions
Editing services
The Pedantic Punctuator: https://thepedanticpunctuator.wordpress.com/
Cover design
The Cover Counts: http://thecovercounts.com/
Self-Publishing Blogs:
Brian G. Johnson: http://marketingeasystreet.com/author
The Guardian’s self-publishing blog: http://www.theguardian.com/books/self-publishing
Karen Inglis: https://kareninglis.wordpress.com/
A.D. Starrling: http://www.adstarrling.com/bonus/how-i-self-published-as-a-uk-author/
Mark Lawrence: http://mark—lawrence.blogspot.co.uk/2015/03/the-great-self-published-fantasy-blog.html
Publishing Magazines
Publishers Weekly: http://www.publishersweekly.com
GalleyCat: http://www.mediabistro.com/galleycat
E-Book Newser: http://www.mediabistro.com/ebooknewser
Readers Forums
Goodreads: http://www.goodreads.com
Kindle Boards: http://www.kindleboards.com
Nook Boards: http://www.nookboards.com/forum
Mobileread: http://www.mobileread.com
LibraryThing: http://www.librarything.com