You could always check out this website Horse Video DVD Rental-Your Horse Matters
It is a DVD Horse training rental website with just about every topic you could think of.
May be worth checking into to see if there is something that may work for you and your horse: )
Yeah , it is way cheaper than buying a bunch of DVDS which are very expensive...if you find one that you like and seems to working well for you and your horse..looking on ebay is another option. I found the Parelli Patterns set brand new for about 1/4 of what it would cost elsewhere on ebay.