AP Comparative gov't?

<p>I'm in US Govt now, and i wanna self-study ap comp gov next yr. has anyone ever taken this class/self-studied it and got a good grade on the test? </p>

<p>I just found out that my school allows self-studied AP's as long as you have "achieved adequate preparation". Since i am in IB (junior next yr), i already hav a tough sched. as it is.
What books would i need?
can i just use prep guides/internet?</p>

<p>thanx</p>