That's like buying a horse for its color. It's hard to maintain interest in a subject that does not hold your undivided attention and desire. A number of courses are available, as well as possibilities of apprenticeships that last as long as you can afford them. An apprenticeship has a lot to offer.
Individual attention is perhaps the strongest argument in favor of apprenticeships.
If this is your path, watch for the pitfalls. At the beginning of any apprenticeship, the intern costs the boss money. Training new people is not easy, especially in this trade. The apprentice often gets to do only the unskilled portion of the job, things like shoe pulling, rig set-up, and clinching. The customer is paying for the experience of the master, and most customers will not readily accept an apprentice trimming and shaping their horses' hooves or nailing on shoes.