The chords built off the 2nd 3rd & 6th scale degrees are minor, so therefor these modes will also be minor in flavor (dorian, phrygian, & aoelian)
the 5 chord is dominant, so Mixolydian will also be Dom.
The 7th chord is a minor 7b5, so the mode built on the 7th degree (locrian) will also outline this sound.
so lets suppose your soloing off a D-7 vamp, the most common choice here would be to you's a dorian scale, but you could also use phrygian and aoelian for added color.
This is quite confusing stuff, it takes a lot of trial and error to understand, so be patient, and feel free to ask a lot of questions. The more explicit you can be with your questions the better we can help you out.
Ex; Why does xxx scale sound funny when played over xxx chord?
