By Karen Clifton — If it is time to start preparing for the ACT, reviewing is vital. The official ACT web site, review books, and practice tests are key components when studying. The following resources can aid in improving scores by several points.Official ACT Website:

http://www.actstudent.org/

Preparation Books:

http://www.amazon.com/s/ref=nb_sb_ss_c_1_4?url=search-alias%3Dstripbooks&field-keywords=act+prep&x=0&y=0&sprefix=ACT+

Practice Test:

http://www.princetonreview.com/college/free-act-practice-test.aspx

Tips and Strategies:

http://www.petersons.com/college-search/act-scores-tips-strategies.aspx

[Updated Aug. 6, 2017: This article has been reformatted for consistency.]