-- Dreamcatcher's post did not say 'go to an auction to learn.' I wouldn't have even responded to that. People choose to immerse themselves in the horse industry and learn in different ways. But the post says 'buy [a horse] from a local auction.'
-- But based on what's been posted I feel like we have a relatively firm understanding of the skill and confidence level of OP? I maintain that purchasing from an auction is not appropriate in this situation. (again, your post said to buy from
not just attend)
In my area (I have never attended an auction in OK) there are two types of auctions: breed auctions and local auctions. The former are high dollar and mostly for breeders and competitors, the latter are 'throw away' horses that have been hard to sell for one reason or another. Mental soundness, physical soundness, sour attitude, etcetc. I'm sure there are things in-between these two extremes, they're just what I've seen.
As far rescues... eh.
I hear and agree with much of what's being posted.
OP, if you're still around, it sounds like you've got the care part down.
Have you considered lessons? I know other posters have suggested this, too.
That'll give you a better understanding of what you should be looking for. Too, you can work with a trainer. It's great to have an extra set of eyes and ears--not to mention their expertise.