The ACT homepage contains information about registering as well as practice tests-
be sure to explore the buttons on the top banner of that page
Do not neglect to upload your photo by the deadline or your test will be cancelled with no refund
https://www.act.org/content/act/en/products-and-services/the-act/test-preparation.html
https://www.act.org/content/act/en/products-and-services/the-act/test-preparation/act-academy.html
Students have free access to IXL through their Chromebooks/Classlinks where they can study by topic - IXL will show them where they are going wrong, so they can see the correct steps. There is also SAT/ACT specific review available.
Students can use Khan Academy for free to get topic specific help- there will be videos and step by step processes available as well as practice questions. There is also specific SAT/ACT review available.