You should read more, but read something you find interesting. Your mother loved Tolkien but your father never read them, I don't think. Sirius has, but Sirius reads everything. You don't have to like all the same things your parents did, Harry. You aren't them, no matter how much you look like them and how much of them I do see in you. You are just Harry, and if just Harry doesn't find Tolkien interesting, no-one's going to be disappointed.

I think you'd enjoy the Chronicles of Narnia, actually. Has Hermione got them? Would she lend them to you?