Training a mini is not a lot different than training a horse - only the size is different which makes things easier, we do join up and the natural horsemanship games with him as well.
Rio responds to food quite a bit, so he gets rewarded for good behavior with a treat.
We first taught Rio to shake hands - we crouched in front of him and touched the front leg , when he moved it we rewarded , we repeated this process only asking for the leg to come forward further each time. He soon got the message and now we just ask to ' shake hands ' and he puts his leg up for us to hold
Teaching to rear was easy - after we had taught to shake hands I simply supported the leg he had given me and then asked for the other leg, he soon got the hang of it. We don't rear very often as it is not good for him to repeat this too much.
Mostly teaching Rio is reward when he does what we want
Good luck with yours