Minor 7th chords are also commonly used in Jazz and all its related styles. The diagrams below show some commonly used minor 7th shapes. You can determine the forms by the positions of the root notes.
A minor7th chord is created by adding a flattened 7th degree to any minor chord. E.g. a Cm7 chord contains the notes C, Eb G and Bb (1, b3, 5 and b7). Shown below are some common moveable minor 7th chord shapes.
This 12 bar Blues features minor 7th chords. Try playing these chords as arpeggios, as well as experimenting with combinations of these and other chords you know.