For $10/month or less, you can get access to a library of hundreds of thousands of books. There are at least three such libraries: Kindle Unlimited (Amazon); Oysterbooks.com; and Scribd.com. All three let you try their service for a free month.
I tried all three. There is lots of overlap among them, in terms of titles. But just recently, Scribd leaped out in front of the pack by adding a collection of 30,000 audio books. I listen to audio books all the time, and have a $24/month subscription to Audible.com that I’d like to drop. If the Scribd library can satisfy my exploratory hankerings, that will be a significant monthly saving for me.
I read on my Android (Samsung Note), iPad, Mac, and Kindle. A lot.
If you are serious about writing, perhaps you too should read a lot.