The very, very best thing you can do is to get a job in a grooming salon as a bather (before you spend money on a school). Most shops will teach you the basics (and more, over time). You really need to KNOW whether or not this is what you want to (and are able to) do.

It is VERY hard, tiring, tedious, strenuous work. It is hard on your body and can be hard on your nerves as well.

Over the decades that I have worked in this job I have seen litterally dozens of "would-be groomers" start the job of bathing only to quit after less than a week. they find out that they actually have to WORK. That it is NOT an easy way to make money and it is most certainly NOT "playing with the puppies".

So, find out about it by doing it, and then decide if you want to pursue schooling.