Ohhhh... this one may need me to write a lot of information... its all so different. I believe that a horse if big can be broke at about 2.5 months which is healthy but think most should be broke at 3years. Ponies I think are a good one to break at 3.
There are so many different styles of breaking. I like best they be broke in a halter. If I had my way, no horse would be ridden in anything but a bitless bridle (I posted a pic of myself with one recently) or a halter. But that is just me
I have nothing against kind bits (snaffles, etc)
I think personally when horses are being broke they should be broke in a way that always allows them to know through reward when they are doing right and not worked long hours at a time. Just a short lesson each day with breaks in the week. A lot of people try and rush breaking especially to sell faster and cheaper. I think it should take a few months process and just take the time to work on ground manners then ground drive with a saddle and lastly have a human on.. the rest is just basically putting time and hours into the horse to make it any riding type you would like
FAQ 
Breaking in your pony or young horse 
