I have them, plus the one "That's my horse #1"
I am a HUGE fan, watched them countless times. If you watch from start to finish, it is VERY easy to understand. I recommend them to EVERY equine owner out there (minis, drafts, donkeys mules, etc)... even if they do not do their own trimming.
What is going on inside of the Hoof AND the digestive system...is amazing, And something we should all make an effort to understand, IMO.
You won't look at your horse the same way again.