I just released the first major update of the interactive tutorials since they were originally released four months ago. As I reworked and added to the tutorials, I carefully thought about what I could do to make the calculator easier to use. All of the calculator changes that I’ve released in the last couple of weeks have been as a result of this process.

There are changes in every slide, with two major additions. First, I added a quiz to test your knowledge of the calculator and website. After the quiz is over, you can go back and learn the correct answer to any questions you may have gotten wrong. Right now the quiz is just for fun.

But by far the biggest new feature is a brand new step-by-step example of optimizing a power system. This tutorial is almost as long as all the other tutorials combined, and it doubled the size of the tutorial flash file to 2MB. My goal was to answer every question that might come up during the optimization process.