I am a very beginner guitar player, and am having trouble with the scales. There is a "C scale" that has 17 notes in it according to scale finder, but then there is also the C scale that has 8 notes in it in Christopher Schlegel's lesson "Scales and chords relationship #1". That is the do re me fa so la te do. I didn't know how to play that, though i know how to play the C scale according to scale finder. I was wondering if anyone could help me figure out which is which...