Yup, make sure they have the 'Complies with JAR-FCL' flash on the front!
They
ALL give you more information than is needed to pass the exams... but still worth knowing. The navigation book (number 3) is the one to be careful with. If you read it it seems incredibly complicated. In actual fact it's all fairly straight forward in practise, and it's the practise that you need to know.
I'm with
FlyingForFun on keeping the books. I've found them really useful to refer to from time to time.
Good luck