Paid $90 annual subscription - please clarify

I have just “returned” to my Anaconda/Python setup. I completed the Intro to Anaconda Distribution, and wish to learn Python purely as a beginner. I understand there is a $90/year subscription but am not clear what course(s) this yearly fee covers.
Is it the 10 “data science” courses so listed under:

with the heading “Getting Started with Data Science”?
The other question I have is: are these courses repeatable to the student (as long as subscription is still active) or are these courses “one-time” only, i.e., once started/taken, no revisits?
Would be grateful for a clarification.