John, Online manuals, diagrams, and virtual simulators are a fantastic resource. There are so many learning tools out there today I wish I had access to as a student- a vast wealth of information! I believe in five years time when devices such as Google Glass become commonplace, we will see an amazing integration of these learning tools and a hands free way in which we can access information so we are "doing" as we are learning in a hands-free manner. Wishing you continued success in the classroom. Theresa Schmitt