The best 3-way Switch Explanation Ever!

The 3-way switch circuit seems to be one of the more difficult concepts to understand. I've encountered many people that struggle with it, both novice and professional. But when you see it explained the way I do here, with verbal, animation of the current flow, a practical demonstration, and even a quick sketch on a white board, you will come away with a solid understanding of the circuit, and I even show you how you would add in a 4-way switch for a circuit with more than 2 switch locations.