Supporters get early access to new videos and make up the core inner audience that provides feedback and insights to refine the final form of these lessons.

There are other perks, including a meaningful store discount and, for the higher-tier patrons, having your name appear in the video.

Most of us find it normal to pay for textbooks and to pay (often handsomely) for courses. I believe educational videos are most valuable when they are free. Although viewers are not obligated to pay for them as they would for a textbook or course, I am very grateful for those who choose to do so anyway.