I discovered Rebecca J. Wenger a while back on Reddit but forgot all about posting her video here. I really like the simplicity with which she approaches the basics of blues. Sure, she may be no Little Walter, but she is able to effectively convey the essence of blues playing in a few wordless minutes and I find that fascinating. Check out her harmonica instructional and then go over to her YouTube page and have a listen to some of her other music. She’s a pretty talented musician!
A Wordless Lesson on How to Play the Blues