Should I buy an ACT review book, or do online released tests suffice

Test Preparation ACT Preparation
1

I will be taking the ACT for the second time on September (got a 26 my first time; school made us take it and informed us a week before so no time to study at the time).

My main dilemma is to whether to buy a review book or not. Would the online released tests suffice? I will be starting on them tomorrow.

2

I think if you take practice tests and go over them you shouldn’t need prep books. You can learn your grammar rule and stuff from Google. If you have questions you can always ask r/ACT. Nevertheless, a prep book isn’t going to hurt you but it’s not 100% nessesary.