This woodworking tricks cheat sheet is If no one reads my wall, this should be a short experiment . If you read This, leave one word on how we met. Only one word. Then copy this on your wall , so I can leave a word for you.
Here's a trick for straightening crooked boards: Rip a 6-in. wide strip from the straight factory edge of a sheet of plywood. Use screws or finish nails to temporarily attach the crooked board to the plywood strip. Keep the fasteners away from the edge where they might come in contact with the saw blade.
This would make jigsaws infinitely more useful. I still think a good band saw is a better choice though.