If you need help on AS AQA Spec A Physics I have a new volume out on Kindle format…..
It is text based with loads of really good images for easy use on Kindle for tablet or mobile phone with key points for items that that might come up in your AQA Unit 2 exam. It is very good for quick revision on the move on your smart phone and can be read for free using the kindle reader once you have downloaded.
Just click here to download so you can use offline as well on your phone or tablet from Amazon).
You can actually have a trial by downloading the first few pages on Materials which show the type of thing that the book contains or you can try out this PDF of the first chapter..
Daniel Powell (Animated Science)