Read the books first, you cannot have an opinion on which is best otherwise. Myself, I've read the 3 times since the age of 13, and I think they are beautiful books (or book, as it should be) and when it comes to the films.... I like the first one, or most of it, and the next two just get worse.... character wise. I can easily watch the hobbit bits, but cannot stand the Rohan parts, or any of the human characters, they are just awful, Aragorn was desperately mis-cast. I could go on for ages, but I'll spare you all.