NEW TO ACT: Which prep book?

<p>I just took an act practice test for the first time yesterday and i got a 30 on it with no prep. </p>

<p>I need more ACT tests and help on the writing section. Everything else is pretty clear cut.
Should i buy the Real ACT Prep Guide to help me on writing? Plus any other suggestions to help improve my score</p>

<p>Real ACT
Barron’s 09
Princeton Review.</p>

<p>Your pretty much set.</p>