Edexcel, the examining board, have a useful section aimed at Students with tips on revision and preparing for exams. Crucially you also have 100s of past papers on every subject the board examins - so you can see exactly what you are up against! Surely a 'must click'!
Site dedicated to providing high quality GCSE and A level revision material totally FREE. Within the site you will find all sorts of subjects from GCSE Biology to A Level Psychology + hints and tips about passing your exams and careers advice.