I received this information in an email and thought I would post it on here too!
"A new site has launched recently providing a network for information for folks interested in horses and training and showing. The site has numerous training videos and forums for questions and answers to a host of horse related topics. You may also find the site helpful in working with horse evaluation CDE teams. Please pass the site address along to any students you may have who are horse enthusiasts."
Another site that has a great resourceful content base of information pertaining to horse racing is available here:
This site has ton of information on races, horses, and how betting is prominent in this sport and how it is all broken down. I found this resource while doing research on the topic; Equine Sports