Like spannerstacx says
http://www.airmech.co.uk/forums/index.php and as recommended by beeline
http://www.club66pro.co.uk/index.php
are good sites. I used clubb66pro for quite a few modules. Don't try to just learn the questions because they aren't the same, similar, but not the same. You will also get referances to where you can find information about the subject.
I would set yourself a plan as to when you are going to sit your exams as the waiting time was at least a couple of months. Try and book them in advance. It is a little better know they have opened shuttleworth up as an exam venu.
I did maths and physics first, which I would say was help with some of the others.
Good luck, it's a long road but just keep chipping away at it.
regards Gascan