Making progress on the Chromatic --- but

I’ m making a fair amount of progress on my Chromatic, got the breathing right, tongue blocking was a bit more difficult with the bigger holes but that’s coming along too, I’ve learned a fair bit by ear, but I really need help with tab, I understand B1 D1 etc what’s throwing me is the B1+ is that using the slide? I’ve found the pentatonic scales online and I’m struggling along trying to understand them. Any tips would be gratefully accepted

Is B1+ meaning playing the draw C? Not sure what you are asking.

For chromatic, biggest tip would be start with a method book, like Phil Duncan’s. Smart call thinking in notes rather than holes. .

I’m not sure either it’s basically the scale with the letter beneath and instead of draw 1 blow 2 there’s one with a plus sign and a number, I don’t know if it means bend or use the slide? And of course there’s no guide telling you what each symbol means.