3 key milestones
1) When your child consistently wakes up with a dry diaper
2) When he/she can say, 'I need to go potty' or some approximation of that;
3) When he/she can pull pants down and back up.
When these 3 key milestones have been met, it should only take a few days to potty train your child. Remember to keep it positive, give lots of praise and small rewards for 'success' in the potty! Have fun!