Anand Gholap has put online an impressive set of books by Annie Besant and Charles Leadbeater.
http://www.anandgholap.net/His listing of books changes once in a while, so it would be a good idea to check back for new books from time to time.
Anand also has a number of PowerPoint slides that were created by Dr. KVK Nehru. It can be of great benefit to look at teachings that are presented in a "multi-media" approach. This can ease the monotony of only reading books, which can get awful dry over time
http://www.anandgholap.net/AG-Theosophy_In...ical_Format.htm
I recently received an e-mail from Anand (in response to this thread). He told me how running his site is a lot of hard work, that it involves sacrifice on his part, and how it has has cut into his private time for many years.
All of this reminds me that some people devote their life to Theosophy. I can only hope that their efforts can serve as an example, and inspiration, for me.