Only thing is have not a clue what to do with him. Only got level 2 building skills. Now I'm on to finding out what he can do.

How??? I can't seem to get one.

The way to get a master builder it to start training one of your villagers as a builder (you can always have them fix huts), and set their preferred skill to building. They will gain skill rapidly at first, and then more slowly, but they will become master builders. The more construction projects you have left, the faster it will happen.