This website was very very helpful to me:
TEASÂ® Exam Practice Questions - Raise Your Test of Essential Academic Skillsâ„¢ Score with our unofficial TEASÂ® Review Strategies
I also used 2 books:
Teas Review Manual from ATI and 5 Teas Practice Tests Second edition.
Once you study, do the tests just as if you were going to take the real test.
I use the online ATI practice tests. There's 2, I did both.
I used this website (very helpful):
Take Online Courses. Earn College Credit. Research Schools, Degrees & Careers
Good luck! I hope this helps!