I don't know if you old hands can remember being confused by certain aspects of the harmonica when you were first discovering the joys of the instrument, but I put myself back into that place when I filmed this new lesson--lecturing to the clueless person I was back then in the way I wished I'd had somebody to lecture me.
In particular, I think that beginners are confused by
1) the fact that the blow/draw thing flips between holes 6 and 7, so that what was the lower note of a give hole (blow) is suddenly the higher note.
2) the way in which the concept of bending doesn't seem to work the same from hole to hole--which has something to do with the melodic distance between the draw and blow note on a given hole, although WHAT precisely it has to do with that distance is almost never directly addressed by harmonica teachers.