I'm doing OCR History AS level (England 1509-58 and Germany 1933-63), Edexcel Economics AS level, OCR maths (C1, C2 and M1) and Spanish Pre-U.

I don't have any notes for economcis (because I've drawn the diagrams by hand so there would be no graphs) but I'd recommend these books:

http://www.amazon.co.uk/Edexcel-AS-Economics-Competitive-Markets/dp/0340947454/ref=sr_1_1?ie=UTF8&s=books&qid=1275404184&sr=8-1

http://www.amazon.co.uk/Edexcel-AS-Economics-Managing-Economy/dp/0340947985/ref=sr_1_1?ie=UTF8&s=books&qid=1275404237&sr=8-1

for unit 1 and unit 2 (the AS units) in addition to notes/textbooks.

I found them really useful, particularly the Unit 2 one.