I'm new to horses. I don't know what am doing, and I need help and advice. I want to someday train him with carting (I'm in San Diego) but have no idea where to start. I wasn't planning to get my mini until I retired, but he arrived three weeks ago! I know all horses require lots of work! Right now my biggest concern is about how much food to feed him. The vet will visit next week, but for now, he acts like he's starving. I'm worried I might make him sick.