<p>Definitely get the Real ACT Prep Guide from the ACT people. There’s also a few other free ACT’s around you can download. Finally, the official ACT online course is useful for more practice questions, even if it’s not so great for learning everything else! I don’t know much about McGraw-Hill, but the only thing you should be using it for is content review and maybe some ideas for strategy. Don’t use it at all for practice questions.</p>
<p>The key to the ACT is speed, so while you’re practicing, do your sections timed whenever possible. Go back and review your answers (ALL of them, not just the ones you got right…guessing correctly doesn’t mean you understand how to do the question).</p>