Great first horse experience! My first horse fell in his first start. No injuries though 
I got really lucky with him but I studied breeding and actually purchased a couple of yearlings. There was one colt at the sale I looked at, he had a right knee the size of a football. Vet certificate on wall of his stall at sale saying the horse was kneeing his door on his stall and that they had drained the knee and kept training it and that no structural damage. His mother won the Oaks over there and he was by the top sire. I got him for $15,000 and the owner of the leading stud was beside me starting the bidding, I said to him, I'm fucked if you want this horse and he said, you really want him, I said yeah so he stopped bidding.
I sold him after a qualifier to Australia for $55,000 to 2 Italian Australian pot dealers, LOL. The funny thing is we qualified him the day before because in NZ if you run in a qualifier your horse is classified as "Used" not new like a car, LOL and there are no taxes.
We had to geld him which pissed me off but he would go out in his yard, squealing at mares in their paddocks and wore a trench down the side of his yard going backwards and forwards. Wouldn't even clean up his food most of the time. They told me they would have paid a little more had he remained a stud because of his impeccable breeding. He went on and won a West Australian Derby and around 100 grand.
That same owner of Nevele R Stud asked me to breed some mares to his stallions that he imported from here. He even provided me a list of broodmares of his I could have to breed to his studs. I remember being pissed off because I wanted 3 colts and got 3 fillies. The lady at the stud called ma and said You are a DAD, you have another filly, I said, thanks, you can shove it back up where it came from.
The other horse I will mention was this guy had a pacer name Rolls Hanover and he was a terrible trainer who had trained no winners. I looked up the stud book and there were SERIOUSLY no winners in 4 generations. He was by Vance Hanover which i think was unraced here, a son of Albatross and the Vance Hanover's were winning everything over there. I asked a trainer I knew to go and offer 10,000 for him after he won an impressive qualifier and he said, "Hell no i don't want to insult the guy". So I went and offered him 10 grand and he almost chained me to the horse as he needed money bad.
We won his first 4 lifeime starts including his 1st start where he was on a 5/8th mile track over a mile and a quarter and he was three wide the last lap pacing roughly when accelerating but he rolled the last Quarter winning by 6. My cousin trained him and I remember my friend coming up to me saying the horse needed wedges under his from feet as many Albatross and son's progeny needed that to correct them. He won like $120,000 and ended up dying of cancer.