I am not new to guitar or music theory, but have not been taking it serious for many, many years. I never really got to the point where I was actually applying music theory as it relates to harmony. But I'd like to change that, but I'm not sure where to begin though. I thought about maybe concentrating on 4 bars, then 8 bars, then 12 bars etc, kind of getting used to isolating those and arranging progressions under those constraints before I get into full songs. Does that sound like a good idea? But I don't really know much about arranging chords in those formats, does anyone have some good info? I suppose that would fall under harmonic rhythm or something like that. Thanks