The better question is...how do you prepare yourself to potty train a two-year-old?? First, wait for signs that he's ready...staying dry at nap or at night, showing interest in the potty, etc. Definitely hold off if he's not ready, it'll just be a headache for the both of you. Most importantly, monitor his bathroom habits and try to catch him with a dry diaper and say (with excitement), "Let's go to the potty!!" You can buy a small potty or straddle the big potty, whichever you/he prefer. I usually start with one or two times a day...right after nap and right before bath are great times to get them acquainted with the potty. Don't hold back with your praise when he does go. Have a potty party! Most importantly, don't get impatient. I just potty trained our fourth child in just under a year. We had lots of ups and downs, good days and bad days, but it was like he wasn't ready until one day--then it just clicked! Lots of kids don't take that long--our second practically potty trained herself. Patience, patience, patience!!!!