<p>The best thing you can do is practice. I took the ACT without any studying and got a 29. After at least 6 practice tests and lots of additional studying, I got a 33. If there was one specific piece of advice I would give, it is to bring a watch. It was very helpful when taking the ACT to think about how fast I needed to go to finish on time. (For math, 1 question every minute, etc.). </p>