How to get a baby to nap?

I worked today and Ryan stayed home to study for his exam tomorrow while Ethan went to Mammaw's. He had a big bowl of oatmeal and banana for breakfast and then Ryan dropped him off. Nana came over and gave him a bath, but then he was being a little booger and wouldn't go to sleep. They managed to squeeze in a half hour nap. Naptimes are not fun anymore!! He has been fighting us most of the time. Guess he just wants to be part of the action!