In case you just got one of those letters from your ISP telling you that you have been selected for the latest bittorent extortion program, otherwise known as a subpoena for your personal records, then you might be asking yourself "what does this all mean?"
I myself wrote a brief article that describes your dilemma--what has come to be known as copyright trolling. So if you don't have any history with copyright trolls yet, read that.
And if you are more in to the spoken word, DieTrollDie put together a nice little podcast where you can hear him explain how the whole thing works. Take a listen and you will learn something. Then go on to search for all the incredible help that exists today. Below is a list of what I believe are the best sites for information on the problem and help with the solution:
Electronic Frontier Foundation.
And arsTechnica has some pretty good stuff now and then.
If you think there are other good sites that should be added to the list, just let me know.