@disco87:
Beware PPL Confuser as the last version out apparently had LOTS of errors - ie highlighting the correct answer in bold on the question page, not just the answer page, but more worringly answers that were just plain wrong. I'm guessing very old editions would be irrelevant in topics such as Air Law, but the laws of physics haven't changed all that much recently, so those sections whould be ok
I'm sure others more experienced than me will highlight this too, and you probably know already, but it's best to only go to tools such as Confuser AFTER you've learnt the material and are pretty confident with it. If you use them to learn, you won't have the background to cope when (not if!) the exam paper you sit is a bit different.
Good luck with the PPL