Self-study books

<p>Please recommend books for most efficient self-study!
This year's list:
Bio (school)
Chem (school)
Psycho (PR, self)
Stat (PR, self)
Environmental science (self,??)
Human Geography (self, ??)
World History (self, ??)</p>

<p>Also, it doesn't make sense to take a foreign language if you are already a native speaker, right? Or should I still take it just for the sake of getting a 5? </p>

<p>Please help! I may not have any background for the subjects. </p>

<p>Yeah... our school offers APs only to the seniors and the APs are very very limited.</p>