the chords behind the modes is what i call them because i dont know a better name. these are the chords that 'sound' with a mode. if you learn the overall basic shapes for the chords as you learn modes youll get them into their right places.
a mode can be played anywhere on the neck as long as you have the right notes. and just because a mode calls for A flat doesnt mean you have to play A flat, you might play G sharp instead ( just kidding). the modes allow you to express your sound diferent ly without changing the key. if you only had the major minor and pentatonics to use music would get dull fast. the modes are really only a guide for the right notes of a key your ear tells you what you should play for your sound. add notes take notes away all you want its your sound not the Ahole that invented modes sound.
one last little note, learn the notes on the fret board that will get you the most use out of theory.
i bet your more confused now. dont worry think on it for a while.
They say the END is near, but I'm Tired of waiting.