What is the best way to potty train my 2 year old?

First is you have to assess his readiness. Can he follow simple 2- to 3-word instructions? Does he know and understand the words poop and pee? Can he communicate with you when he does these two? If so, set a routine with him. Take him to the toilet at certain schedules and make him stand or sit on the potty even if he doesn't feel like doing anything. And the minute he poops or pees, direct him to the potty and explain that he needs to do it there. At a certain point, you will ask him to inform you that he needs to poop or pee before the fact so you can both rush to the potty!