In terms of learning the material ahead of time, buy the relevant textbooks (CO-OP) and lecture notes if possible. Personally I wouldn't recommend doing this since the first semester material isn't going to be
that difficult. If you want to do something productive, work on your essay writing, communication, scientific writing (important) and other generic skills. I can't stress this enough.
In any case here are the textbooks. You should be able to find a syllabus for human biology and chemistry online, this isn't going to be much help with the former since the entire damn thing is examinable.
Human Biology - Seeley's Essentials of Anatomy and Physiology
http://www.amazon.com/Seeleys-Essentials-Anatomy-Physiology-7th/dp/0077361385
Chemistry - "Chemistry", Blackman, Bottle, Schmid etc.
http://www.booktopia.com.au/chemistry-allan-blackman/prod9780470810866.html
Assuming you're doing normal math you should buy the book "A First Course in Linear Algebra" by David Easdown. As for differential calculus you'll have to wait until semester starts before the lecture notes go on sale. Your other option is to buy "Calculus" by James Stewart (CO-OP), it's an excellent resource and will help you through second semester math (and beyond).