Hello - enjoying the material for the new class.

I have been drilling into my head the numbers of major scale notes getting my eyes and fingers used to their relative positions. As an exercise, I have been saying out loud the "number" of a note as I play the scale. This has helped me particularly find notes that I like to play such as the six and the 9, and the 1-3-5 notes of a triad.  Now that you have introduced the Dorian stuff, I am at a loss as to how to describe the extra notes... 

Not sure that is clear at all, but can you maybe elaborate or point me somewhere? 

Thanks, Crile