The Online College of Astrology's web site at:
http://www.astrocollege.com/library/index.html

This is the Library page.  
Look for the "Articles and Informational Files" 
heading and you will find my article "The Magic of Midpoints".

Towards the end of this article, you will see a link back to 
this web site, where the free lessons begin.

There is no subscription, no sign-up.
Just go to the pages and begin !