Here is a link to the specification for the AS and A2 course, will be useful when you are revising as you will be able to see if there are any gaps in your knowledge. But remember we do not cover all of the topics!
Advice guides for students (AS and A2)
Some useful guides to the exams, they look at command words, question style and exam technique. Without a doubt worth a look.
A range of revision tools which cover all of the topics you will study. These sheets summarise the topics and can provide a good starting point for you build your notes around.