Using these links you can download a lot of very useful charts for chords and scales in PDF format. All these documents are build with DenzoSoft applications.
Hope you'll find them good for your study.

Drop2 chord list: drop 2 is a particular voicing very used in jazz and pop music. To play this type of chords you don't need to be able to play barrè because is based on 4 note (one for finger), but with barrè you can play simplier a lot of positions (~2300 positions, 268 KB)	Drop2.pdf