Study Strategy
I used the REA Texes study book with two practice tests, though it wasn't enough for Probability & Statistics, Trig, and Calculus. I also checked out several library books on various math topics, and purchased math text books from Half Price Bookstore. I also used the Pearson online practice test. I studied for about four months.
The one resource I didn't use and should have: the prep course intern portal. I was searching for so many sources that I didn't notice that this was available to me. I'm sure it would have helped.
Testing Strategy
This was the hardest exam I've ever taken in my life! I used practice tests until I scored in the 90% range. During these practice tests, I was finished within 2-1/2 hours.
I expected to have time for bathroom and water breaks. Didn't happen. There were questions on the test I've never seen before. When I got the 10 minute alert, I had about 20 questions that I had flagged for review. I ended up just guessing the answers on these.
I thought for sure I had failed, yet was surprised that I had passed with 85.6%!
There are some questions that are removed for the actual score, yet there's no way to know which ones those are.