Get them from your local Library or shop. What was the book you were after

All you have to do is become a member of your local library then you need to take 2 books out, once you have finished you will need to return those two books do that again (so you have read 4 books) and then one more time. By the end you will have read 6 books. When you return your last set, book 5 and 6, you will get a reward for finishing the challenge. Hope you found this helpful!