I agree with what others have said about checking into an Equine Library (some tack stores offer these) to rent some parelli/other equine training videos. Ebay
might even offer these videos for a little bit cheaper. I'm not sure though, i've never checked to be honest ^^
If I was first getting into horses and had absolutely nobody knowledgable about horses to chat to in person and I considered reading into Big Name Trainers, i'd want to sample a bit of each before I got my heart set on one Trainer. Its a shame that no Big Name Trainer offers a cheapie DVD to pretty much "sell themselves" to a new and inexperienced horse person. A short DVD to showcase their views on horses and methods of training. I mean, Clinton Anderson's sets are what.. 120.00? (i think I read that on a thread around here) that is a LOT of money to pay if you aren't sure of his methods. What happens if you buy the DVD's and think he is way too harsh? You're out $120.00 bucks, and now you can flush more money on another Trainers expensive DVD set and hope that it'll be the Trainer for you.
I hope that makes sense... for the sake of new and naive horse people, I wish there was a "free" way to view some of the Big Name Trainers methods before having to dump oodles of money that could otherwise be purchasing blankets, updating vet kits, etc. I was working on something for my website and I couldnt find ANYTHING on Clinton Andersons website about actual horse training. But it was very easy to find the Store, and where to order tickets for his next event! ;) I didnt check parelli's site.. but Stacey Westfall actually answers her followers questions and gives advice freely. I think that's awesome ^^
I am very, very fortunate to have never needed to learn about training horses from books or videos. God put me in the right place to learn what I needed to from a very experienced horse woman with numerous horses of varying disciplines/training levels for me to work with and learn from.
I wish everyone could be this lucky!