How do I put windows in my house?

How do I put windows and doors in my house and I need help on making roads. Help please?

Your mesh is going to have to have windows and doors in it. If you don’t have access to a modeling program, there are a couple of packages of “primitives” that you can use to build a house. Here is one package:

http://www.gameprefabs.com/products/show/101

I think there are one or two more in the Asset store.