Z.S.
Hi C.,
Is your son even ready to be potty trained? Does he show an interest in wanting to be PT? Because it will be a battle between the two of you, making it difficult.
When my son showed an interest, we had him choose his potty chair and we rewarded him with stickers that he placed on the lid of his chair. Also what really helped was this DVD called, "Potty Power" I recommend buying it or borrowing it @ your local library.
Consistency and patience are the keys to PT. Work with your son on a daily basis. There's going to be plenty of accidents with PT, but be patient. Even when you're going out, bring your potty chair with you in the car. Lots of praise and love will motivate him to go too.
Take care and good luck!