What if you wanted to learn something that is not related to programming? What if you wanted to know the best books/blogs/etc to learn how to make awesome tutor

What if you wanted to learn something that is not related to programming? What if you wanted to know the best books/blogs/etc to learn how to make awesome tutorial videos? Where do you usually go in that case (for validated/curated resources)? (And event on SO these kind of questions get closed down. Some get protected, but is only after they get significant traffic. http://stackoverflow.com/questions/1711/what-is-the-single-most-influential-book-every-programmer-should-read http://stackoverflow.com/questions/1711/what-is-the-single-m...)