Which book are you guys using/which one do your recommend?

<p>Well, I should get started on studying for the ACT. Which book are you guys using and which one do you guys recommend? Is the official one really official and is it any good? Thanks in advance :)</p>

<p><a href="http://www.amazon.com/Real-ACT-Prep-Guide-Official/dp/0768919754/sr=8-1/qid=1161239532/ref=pd_bbs_sr_1/102-2494708-6312150?ie=UTF8%5B/url%5D"&gt;http://www.amazon.com/Real-ACT-Prep-Guide-Official/dp/0768919754/sr=8-1/qid=1161239532/ref=pd_bbs_sr_1/102-2494708-6312150?ie=UTF8&lt;/a&gt;&lt;/p>

<p>"the Real ACT Prep Guide" (its red and yellow, with Black letters)
and
Cracking the ACT (by the Princeton review)</p>