#2
well those n-3 things are ****ing confusing, but those are the positions of a blues scale in the same key. use the first position to start out with, the first note is the root note/key
#3
The black dots represent the pentatonic scale.
if you add that blue dot to the black dotes, you get the blues scale.
memorize both
Quote by Hail
i'm the internet equivalent of ripping the skin off my face and strangling you with it right now


Quote by Steve Albini
Remixing is for talentless pussies who don't know how to tune a drum or point a microphone.
#4
Those pics aren't exactly particularly descriptive for someone who's new to it.

They're all different positions for the same key. Have a look at this page:
http://www.i-love-guitar.com/pentatonic-guitar-scales.html
It shows all the 5 pentatonic shapes for the key of C major as well as having some basic introductory information. You'll need to dig deeper in the future, but hopefully it's enough to get you started.
Gibson LP Traditional, LP GT, LP Studio, SG Standard x2
Barber Tone Press > EHX Worm >TC Polytune > EXH Glove > EHX East River Drive > Zoom G3 > TC Spark Mini Booster
EVH 5150 III LBXII
Jet City JCA22H
.
My SoundCloud