If you are just starting your A-levels in September 2015 you will be doing new brand new syllabi. I have started the process of updating the revision guides to reflect the changes to the structure and content of the courses. The new AQA guides are now largely complete and I have posted them here. (There are two guides that are not quite complete but these will appear in the next couple of weeks.) They exist on the same page as the old syllabus guides which are still valid for present yr13 students.
The new OCR and EDEXCEL guides are not yet complete but I hope to be posting them before the end of the September. The old guides are still 95% useful for the new courses in the meantime.