You don’t need “horse related business courses” you need “business courses.” Basic stuff. Then, when you have at least a functional understanding of running a business, then you add the equine related issues.
Put another way, “horse business” is a subset of “business,” not the other way 'round!!!
One of the things you will learn is “business planning” and maybe the first question should be “why does my relevant market need my services?” To answer this question you must first define your “relevant market” and then determine the most common demands for service within that market and then show how you will provide services to meet the demands. This is not done the back of an envelope. This will take several sheets on a yellow pad and you may wear out a pencil or two. That’s OK. Pencils are cheaper than erroneous business decisions.
This does not mean you have to go find a combination MBA/Equine Business Degree from an Ivy League university. It does mean that you might want to see what kind of “survey” courses are available from you local community college or even on-line.
The hard reality of the equine business world is that it’s a place where you can lose a lot of money fast but you can’t make a lot of money fast. Take you time, educate yourself, train yourself, and then if you have the capital then take the plunge.
G.