Guitar and music theory, where to start to be successful?

So you started playing guitar, it’s going great but you don’t really understand what you’re doing and you’d like to improve your knowledge on music theory. Maybe you’d like to write your own music but you don’t know where to start to express what you feel, or you want to be able to improvise great guitar solos but you have no idea about keys and scales.

How to use chord progressions with chromatic passing tone

Piano - Chord progressions

A chord progression with a chromatic passing tone is a chord containing a note out of key that is right between a note from the previous chord and a note from the next chord. This is a music composition technique that can be used to create some tension that is resolved in a nice way to the ears because of the chromatic movement involved.

The mystery about modes in music theory

Mystery about modes

For a lot of musicians, this subject seems to be causing a lot of confusion, as if exotic sounding terms like mixolydian or locrian were coming from another planet. But once you know what it is, it can become a great tool to help you on your composition or improvisation skills.