Here are some resources you can use to prepare for the ACT test.
Registering for the test:
Register for the ACT test at the ACT website: www.actstudent.org
Preparing for the test
The ACT has four sections:
Optionally, you can do the writing section if the college you’re applying to requires or recommends it.
The ACT has a good mix of topics from your high school education. The best preparation for the ACT is to study well and ensure you are learning and retaining the material in your classes.
Here are some additional practice resources. Note that none of these are provided by me, so click at your own risk.
http://www.actstudent.org/testprep/ – A listing of test prep resources through ACT
http://www.actstudent.org/sampletest/index.html – ACT Sample Test
http://www.testprepreview.com/act_practice.htm – Sample ACT Test questions & study guides
http://a2pioneer.org/pioneer.english/sat_act_mme_ap_test_prep_resources – Listing of test prep resources