You will not find a lot of Parelli supporters on here, but if you like what you see in his DVDs and what you read in his books than go for it. Try not to copy what they show you there, just get an idea and see what works for you and your horse. I am not a big fan of Parelli as a person but I believe that some of his basics are helpful. In the end you have to see what technique is a good fit for you and your horse. Every single horse needs a different approch in training and it is a great experience to train and work with a horse, so good luck and enjoy it!