I'm a complete novice at carpentry but I might get an old doghouse from freecycle and try to convert it into a coop. What sort of tool would allow me to cut holes in a solid wall? I have a drill and a hammer and a staple gun. Besides a way to cut through wood and walls - are there any tools I would probably need to do this project? What sort of saw would I need? I'm thinking I would want to saw window-size holes in the solid walls of this dog house - and that then I would cover the openings with hardware cloth that I staple-gunned and then secured with washers and screws. I might need to remove and replace the roof - so I would need a saw prehaps to do that too. I would be good to own a saw if it was affordable (to prune trees, etc).