How can I prepare for the ACT in a month?

Hey everyone, I'm a rising junior, and wanted to know how should I prepare for the ACT under the following conditions:

Desired score: 34+
Time: One month
Date of exam: October 2016 (ACT with writing)

What's your current score level? My advice will differ depending on how much you need to improve to reach your goal.

I haven't attempted the act yet. Though, I got a 33 in ACT maths(unofficial paper).