I did think about that in regards to my question about religions, but unfortunately I didn't find the time to visit a temple or otherwise contact religious authorities.
Finding the right contacts is important, but usually you can find characters in your characters realm that can tell you all of these things.
Sometimes they can't tell much about the individual religions because there isnt much to tell.
Many religions in BM arent that well worked out.
http://wiki.battlemaster.org/wiki/Religion_Pagesthis is a list of all religions, it's quite out of date though...