I would start with children's books as they will be shorter and have less vocabulary that will be hard for you. There is a category called "chapter books" that would be a good place to start. Then, once you find those are easier to read you could move on to "Young Adult" books and then what you might normally read. Some recommendations:
Bridge to Terabithia
Summer of the Monkeys
Island of the Blue Dolphins
More advanced I would recommend To Kill a Mockingbird.
I read a lot and would be happy to give you more ideas if you tell me which topics you like best - romance, animals, mystery, horror......