Potty Training, it begins

For the past three days we've been taking a proactive role in potty training. He shows all the signs of readiness. He can pull his pants up and down, he knows when he pee's (and he doesnt like it!) and he knows where the potty is. While we have been unsuccessful getting anything in the toilet, we still try. We take him to the potty every 20 minutes when we get home from work until its his bed time. I'll show him how to go potty and he'll sit there with me. Its funny because he'll sit there with a book or rest his arm on the tub and drum his fingers....I'm starting to think he likes sitting at his toilet just so he can be naked!