I did it with my horse when I first got her, I did it for a year with her to calm her down as she was very unsettled when she was moved. Anyway, I found it very useful and fun. It helped a great deal with my relationship with Tessa (my horse.)
Some people think its a very slow process, but it doesn't have to be, I went on two courses to pass my level 1, they were expensive but definitely worth it, after you've completed your level one it only gets better.
I think you should try it, if its not for you you will know.