There are several websites that offer free ebooks, the Prolific Reader is a website that offers hundreds of books divided by genre for the long haul. I admit I have downloaded a few books from this website to be added to my TBR list.
All of the offered books are on instafreebie which means that most of them can be downloaded as long as you subscribe to the author's newsletter. You can always unsubscribe at any time.
My first book of An Ominous Book Series has just been added to the database. Why not take a look at the website and see if something interests you?
Visit the Prolific Reader HERE.