Hi, I don't think you could get the whole book for free as it is normally around £25.00. I have the actual textbook at home and I got it from Amazon But here is a useful resource that is free online https://maeecha.weebly.com. This website covers all the AQA topics and CSP's from a student themselves. Also, using the AQA GCSE Media Studies specification is a really great thing to use too. Lastly, https://www.youtube.com/channel/UCs3jQGaxW7owaF2yKM3qHlg is a good YouTube channel and has a whole playlist on AQA Media Studies with CSP analysis. I'm sorry about the free textbook but I hope this helped. Btw, you can get the simplified revision guide for £12.60 on Amazon too