Any good sites?

Google xtremepapers or freeexampapers. Just do the past year papers and refer to the mark scheme if you are confused. Keep doing it until you get a hang of it. Maths is all about practice. But remember, Practice does not make perfect. Perfect practice makes perfect.

Does it matter if the exam papers are out of date (like for a new spec) ?

Oh no, it doesn't matter. For Maths, there all the specs are the same seeing as it is a traditional subject. And lets say you come across a topic not in your current syllabus, you can always skip it but that is very rare with Mathematics.

because as I'm doing gcse modular maths (unit 3 geometry) i can then have a look the questions. thanks for clearing that up

Are you doing A-levels? examsolutions will get you an A.

oh okay, cheers for that link. What's so good about examsolutions buddy ?

Basically an amazing maths teacher who has a ton of tutorials on his website. He also goes through many of the past papers. Have a look for yourself, type examsolutions into google