There’s a lot of contention over whether to give away our books. Many authors (and others) say no, given the amount of work that goes into them, but if you have a series of books, listing the first for free is a great way to introduce yourself to new readers so they can buy the others… assuming your book is so good that they want to read more. And that’s the crux of the matter, we all need to put up the best quality we can. This is why we need people like me (editors) to buff our work to within an inch of its life.
So, whether you agree with freebies or not, below is a site that offers 30+ every day. Take a look. I bet (one of my ebooks for free!) that there will be at least one book to tempt you.