Exactly what I needed, it's insane. Relieved so much stress. Am freaking out about English, but knowing that I've gotta better handle on Society and Culture now is helping a lot. Thank you very much.
Succint and easy to understand (given simple wording and many diagrams). Very grateful as I've never been so good with my sciences. Bio is my only science or maths-related subject, so this helps immensely. Thank you.