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

Test Dates 

Test Fees

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

• https://www.kaptest.com/act/free/act-free-practice-test