Open Course/Dropping a Course to Enroll in Another

You may or may not read this, my computer is showing the forums all erased but in the case you get this:

I enrolled for the "Open Course" but I don't have access to any material regarding it, mabey it hasn't started yet or I don't understand what it is exactly.
If it is not going to start how do I drop from it and start another one? I was interested in Gnosticweb's Meditation course to see what was in it, I didn't know if it was just things Samael Aun Weor has already explained or if it's new stuff perhaps.

Let me know,

Thanks!