Once you have registered for a course, you can access all the components of that course right from your account page. Go to https://inspirica.com/my-account/ and look at the course components listed under "My Test Prep and Tutoring".
Everything you need to get into class and take advantage of all the materials and instruction is listed under that heading.
To get started with your Inspirica.com course, click through each of the course components to familiarize yourself with the contents. Further instructions can be found on those individual pages. It's a good idea to click through all of the course components before getting started.
If you don't see any course components listed here, you did not successfully enroll in any Inspirica.com courses. Head on over to https://inspirica.com/what/act-sat-prep/act-sat-smallgroup/ to learn about some options you might like!