Please feel free to use these handouts. They're meant to be printed out and brought to the forge. Take notes on them if you like, mark down your own thoughts, use them to help you learn, even hand them out in a class you're teaching in person. The text, drawings, and photos are my own work, and I retain copyright, but grant a nonexclusive license for personal use, and classroom or teaching forge use (provided the copyright notice at the bottom is unchanged and legible). If you want to use them to teach a distance learning class, copy them to your website, print them in a book, or something else that's beyond the listed use, contact me.