My fiance & I got Groupons for 3 horse riding lessons at Twisted Tree Farm. The stables themselves are very pretty and set into a calm area of North Scottsdale with views of Pinnacle Peak. It'd be a really cute place to take engagement or family pictures, if they let you. Twisted Tree Farm caters to real riders, like the kind that do jumps and that sort of competition. We didn't quite realize that when we got the groupons...my fiance trying to post and such was a funny site. We just wanted to learn how to ride horses and get to run with them cause trail guides on the hour rides in the desert never let you. Our instructor Victoria was really nice, knowledgeable, and patient. She let me go slowly (those horses are giant) and made sure I felt comfortable with everything.
Twisted Tree Farms seems like a great place to go if you want to learn english-style, jump-style horse riding. If you are just looking for regular horse riding lessons like we were, someplace else would probably be better.