How To: Solve a medium difficulty sudoku puzzle

This is a sudoku tutorial for a medium difficulty puzzle. It has less "given" easy solutions, so we have to use harder logic questions to figure out some of them. I'm sure I overlooked some easier ways to prove certain numbers, but it's good that you learn how the logic works for future difficulties. You should aim for about 10 minutes per game once you fully understand how to play. Have fun!