Also, if out of sources, order the the new red book.
This will have 3 additional recently administered exams. So make the best use of them!
A month's late response; I apologize! I never saw a continuation of this thread. You can get the ACT Red Book and Black Book on Amazon or other book-selling stores. Unfortunately, I believe that the Black Book is only compatible with this older version of the Red Book? Both versions feature near-identical tests, though, aside from the double-reading passages.
If you can't buy them, local libraries will also often stock them! It's where I borrowed my prep material!
Purchase and read through this book, thoroughly. Then do the practice tests in it: https://www.amazon.com/Official-ACT-Prep-Guide-2016/dp/1119225418/ref=sr_1_1?ie=UTF8&qid=1475214343&sr=8-1&keywords=red+book+act
Approach questions with confidence after you read the book.
E: Learn the English grammar rules: http://blog.prepscholar.com/act-grammar-rules
M: Brush up on math with Khan Academy SAT Math Practice.
R: Practice tests!
S: Practice tests!
When taking practice tests, always take them in a realistic environment (preferably in the AM).
USE A TIMER. Practice setting the timer 5 minutes early. This will help you get used to 5-minute warnings. Try to finish AT the 5-minute warning so you have time to go back and check.
You'll do great!