Here is the reading list for our class. The required reading is available online for free; the recommended reading that is not online should be easily obtained through either your local library (don't forget about ILL) or pretty much any bookstore.
Required reading:
(See, that was painless, wasn't it?)
Recommended reading:
Anything else at the above site
John Frawley's website
The Real Astrology by John Frawley
The Real Astrology Applied by John Frawley
The Horary Textbook by John Frawley (notice a theme here?)
The classical texts at Canopus
Steven Birchfield's website
Deb Houlding's Skyscript
Sue Ward's website
Angelicus Merlin site
No, I won't quiz you on any of the recommended reading, but it is very valuable information and there are some great articles. I almost put The Horary Textbook in the Required reading, but I wanted to keep the class absolutely free. It is invaluable, though, so if you are serious about this art, do invest in it.
Happy reading!

