This major scale on the guitar is the 1st form of 5. This scale begins on the 6th string with your pinky finger. Play all the way to the top, then all the way back down and come back up to finish on the root note.
Scale Patterns are moveable scales where fingerings don't change from key to key. The root note (green dot) names the key of scale. What does this actually mean? It means you simply learn this pattern and you immediately know all 12 keys. You just need to place it on the correct fret to play the scale in a particular key.