AP Euro and AP US Government

<p>I'm starting to self-study (late, I know) for AP European History and AP US Government this May. First of all, is this too late to study? I feel like I have a fairly solid background in Euro from European History last year. </p>

<p>Are these two classes, possible to self-study in three months or so? I have the Princeton Review book for both, as well as some practice tests. </p>

<p>What topics should I especially focus on? Any help for DBQs?</p>

<p>All help is greatly appreciated. Thanks. :)</p>