I just bought a diatonic harmonica in the key of C (Hohner's Big River Harp), and I'd really like to learn how to get around with it. It came with a "Step by Step" guide to understand the basics of the instrument and how to play it (e.g. single notes, puckering, tongue blocking), but it's not easy to learn how to play an harmonica simply by reading a book.
Are there any useful online resources I could use? I'm interested in video lessons and tutorials: something I could use to learn how to place the tongue to play single notes, puckering, and tongue blocking techniques, etc.