Choosing to learn guitar theory is one of the best choices that you can make as a guitar player and musician
. Many overlook the importance of learning music theory for all sorts of ridiculous reasons. Learn guitar theory now so that you can advance to becoming a much better player.
Music theory is simply a way that music in all it's forms has been written down and explained. It can aid the guitar player because you can learn and recognize music as it's being played in ways that you otherwise would not have understood. When you hear the patterns, scales, and chords that you have learned from theory, you can use this application while playing.
One of the biggest arguments that people bring up against learning guitar theory is that you will become this analytical and technical player who lacks emotion in the music. This logic would be like saying that someone who learned guitar chords lacks emotion because they learned them mentally as opposed to just randomly playing from the heart. Don't buy into the excuse that learning means that you will lose the passion for the music that is there.
All the great guitar players have learned music theory and understand it's applications. Even if they play a certain style, you better believe that they understand the music behind multiple styles of guitar playing because they have sat down and worked on their theory. They are good at music because they have an understand of music.
The best place to start as a guitar player would be with scales. Learning scales like the major scale will allow your mind to start to understand the relationship between those notes as well as the relationship between the notes in certain chords and why those notes are used as opposed to another. Practice memorizing and understanding these scales as the backbone of your guitar theory.