Walking with assistance

A few days ago Michael helped Owen figure out how to walk with his walker. He had played with it a little before, but mostly the walker just drug him down with it since he wasn't getting the whole one foot in front of the other thing. This is the first time he actually got it. He loves it now and walks all over the place. The only thing is he hasn't figured out how to turn so he walks until he gets stuck and then starts to complain. I really want to take him to a basketball court or somewhere where he can just walk and walk and not have anything to run into, but with him having a cold right now we haven't wanted him to go outside.