WASD to move IJKL to turn UO to role Click - adds a vertex to the add object queue F - closes current shape (adds a line to the end of the object that connects the first and last vertex) Space - Adds object to created objects C - clears vertex queue for the add object IF you absolutely must try turbo mode, press T to make it a little bit easier.
Made by me. If your objects look like straight lines I advise that you look up or down, and move, to see it from a different angle. Staying in one plane will mean that everything looks flat.