Be encouraging, but dont force it. At this age they show an interest, but may not be ready yet. I know we all cant wait until the diapers are gone, but if you force it before his is ready it could make the process longer. Make it fun for him to want to go with rewards like stickers and make a huge deal out of when he does go. We bought my DD a potty at 18 months, but she didnt start using it regularly until she was 2 1/2 years old. We let her tell us when she was ready and now she is in undies all the time. Be patient and encouraging and it will happen. Good Luck.
at 2:28 PM on Jan. 1, 2011