He probably won't show you what he needs for a long time. You have to carefully watch them, and sometimes they will do a little circling behavior before they pee, as if looking for a place, but you have to train your eye to watch for it. Most people get an x-pen and place the dogs open crate in that, along with food and a pee pad. Are you planning to pee pad train or train to go outside. This link has great tips for both methods.
Free House Training for Puppies and Adult Dogs - No More Accidents Starting Today!