K.R.
I agree with all the other post in that you must make sure they are showing signs of being ready. If they are then the best thing that worked for us was to set a timer for every 15 minutes. Take them to the bathroom and make them sit to get used to it. If they go then give them a sticker on a chart. It really works. My daughter was totally ready to be potty trained and with this system she was trained in 2 days!!! She rarely has accidents and tells me when it is stime to go!! It really was an easy process becasue she was ready to take that step. My daughter is 2 1/2 years old. She started showing signs this summer and is now completely potty trained.
Good luck!!!