I'm somewhat confused.

I want to study the Praxis Core group of (3) subjects, nothing more.  But, I'm confused in FINDING where to go once I log into Khan. If I click my Username > Learner Home from the upper right corner of the screen, it brings me to a page, "My Courses" with a blue Resume button. However, I see nothing on this page about Praxis Core prep (?).  Am I in the right area of the website?  I want to resume my studies in Praxis Core.  Any help would be appreciated.  Thank you.