I've started with my daughter, and I'm doing it the way my brother-in-law and his wife trained their son who was trained (only wore diapers at night) before he was 2 y/o! They noticed he went poo poo fairly regularly after meals, so after every meal, they put him on the potty (big toilet with potty seat) and insisted he go poo poo. He'd sit with a book and go and call to them when he was done. My daughter has started to go occasionally in the toilet. It takes awhile to get them to go that first time, but once it happens, you make a big deal about it and give them a treat, praising them for being such a big girl/boy. My daughter LOVES feeling like a big girl, so this works great. The hardest part about this is consistency. I forget to put her on pretty often until it's too late - I get caught up cleaning up the mess from the meal, and she goes in her diaper before I think to get her on the toilet, so I'm not sure she'll be done by the time she's two. BUT, I know it'll be a lot sooner than my son, who's 3 1/2 and still not trained! Argh! :o) Good luck with everything!