Richard, you are one of the few instructors that makes learning easy. You have the ability of taking a student with zero knowledge in a subject to them being able to comprehend technical nuances. I appreciate the way you articulate technical concepts and explain why it is done a certain way and you also give us your preferences. For a student who is not in a classroom setting with the ability to ask questions as the lecture is taking place, I find with your lessons, you have answered all my questions by the end of the lesson. I have enjoyed your lessons.