<p>Which ACT prep book is the most helpful?</p>
<p>The Real ACT Prep Guide (The Red Book) because it has five official ACT practice tests.</p>
<p>Good luck in preparing for the ACT!</p>
<p>Barron’s ACT 36 is also helpful.</p>
<p>Which ACT prep book is the most helpful?</p>
<p>The Real ACT Prep Guide (The Red Book) because it has five official ACT practice tests.</p>
<p>Good luck in preparing for the ACT!</p>
<p>Barron’s ACT 36 is also helpful.</p>