Clinton, If your tuning makes an open chord such as the ones you mention you can find a lot of them on your own pretty easily. Of course you have fourteen right off the bat just by barring the fretts betewen the nut and the body of the guitar. From there you can add 6ths, 7ths, 9ths, 11ths, 13ths, flat the 3rd, 5th, etc. This will get you quite a good number of chords. When you're comfortable with scales in a tuning, you can start playing with chord fragments for even more variations.

Sounds like fun,

      - Mark