ACT English help! (punctuation)

<p>I've been taking practice tests for the ACT and my English score is always landing around 34-35, but I always seem to miss 2-4 questions on punctuation. The questions I tend to miss always seem to be ones with commas (I tend to guess on these, I only go based off of what sounds right, I don't actually know any rules). Is there any way for me to improve on this? Are there any books or websites that will help me out, especially if anyone has had the same problem? Thanks.</p>

<p>+1. I got -4 on rhetoric which really hurt.</p>

<p>The Barron’s ACT 36 has a pretty extensive section on punctuation/commas. You might want to try that.</p>