Actually, I’m also a bit puzzled about scales. I am in grade 2 in Justin’s course but recently started grade 3 of the music theory course.
@Richard_close2u says that the first scale to learn is G pattern 1 and this is the first scale pattern introduced in grade 3 of music theory. It all seems quite logical and nicely explained. As someone who likes learning things, I don’t have a problem learning this or other scales without completely understanding their full meaning and assume that there will be a big “revelation” somewhere down the line where things start to fit together.
However in grade 2, scales are introduced differently. The first being the open E minor pentatonic, then C major scale using open strings, then the A minor pentatonic. It’s a bit difficult to understand why they are in this order or what the relevance is at that point in the course and why Justin doesn’t introduce the G major in position 1 at that point in the course rather than introducing these other scales.
As I previously said, I’m not worrying too much about that and just learning what comes up in the guitar course and the music theory course, without really fully understanding the complexities.