I'm not sure if this is a better question for here or /r/askanthropology, or some other sub, so I'm sorry if this is in the wrong place.

It occurs to me that I've been able to read a lot about greek and roman beliefs, legends, practices, etc, same with Norse and Germanic, and Celtic beliefs. But my ancestors came from Poland and I'm having a hard time finding much information on the kind of things they believed, especially anything in English that I can read. Any recommendations or anything you could tell me would be appreciated.