Thanks @BoyleHeightsKid and @Heinz 57 !!!
Anyone can learn but: You must have the self discipline to truly LEARN all the anatomy, what constitutes a Healthy Hoof and how that hoof SHOULD work. It’s not just picking up a rasp and having at it. Study GOOD, healthy hooves so that you know what one should look like, how it should operate. This way you won’t fall for counterfeit.
Love the original Pete Ramey videos as a good starting point. Note however, Pete himself says he’s come much farther in his understanding since then and it’s due for a big update - but it’s still a good foundation.
Study Paige Poss’s info at http://www.ironfreehoof.com/ - especially the pictures. I printed out every single one and kept it all in a binder.
Also highly recommend James Welz’ info at https://www.thehorseshoof.com/ - This has had the most impact on how I trim and why I trim what I do–especially when it comes to rehabbing the “typical” OTTB of long toe/underrun heel etc. – most notably, how bars are trimmed 
I started out doing my own horses only because my farrier/trimmer was moving too far away and I just did NOT trust any other hoof care practitioner in my area. One of the best things I’ve ever done for my horses.
Then I got “noticed” by a local eventing barn owner who asked me to trim her daughter’s OTTB mare who desperately needed rehabbing out of shoes. That kicked off my business, Four Square Hoof Care, and now I trim 57 horses every month as a part-time job. The income covers my horses’ expenses 
So, you never know where it’ll take you!
EDITED TO ADD: I also highly recommend you have a good trimmer to oversee your work for a while. Even if it’s long distance, send them pictures and ask questions so they can guide you over time. That’s exactly what Heinz57 and I have done.