I've never rated a purchase before, but I HAD to for this as I was so impressed. I'd also never read a "For Dummies" book before, but I thought I would try this one as I am currently revising for my Biology A-Level first modules... It was an excellent investment (and such a good price!- though also well worth the RRP) and I've already reccommended it to all that are doing the Biology AS. It's great for all ages though- young and old. It would be good for those that need to refresh their memory (like me) and I have no doubt, for those that are starting out with Biology. It contains everything that is in a normal textbook, and more, and yet somehow kept me interested in ways that normal textbooks...just...don't. The author's humour was also a plus! Perhaps I'm just crazy, but I sat down and read this and didn't put it down for hours- and by the end I felt completely confident about my upcoming exam! (It's great if you find revision difficult.) It covers almost everything one would need for an AS first module...but I would reccommend this book to anyone that is remotely interested in this area of Biology.
I would also like to say that, I've now ordered many different books in the "For Dummies" series (including Computer Programming & Forensics etc), and they are ALL definitely worth the read. :-)