Now why would you want to know that? There are all kinds of ways you can find out, some legal some otherwise
however, as to your first question, I have spent more than 10 years researching and writing opinions on international law and treaties and it's still new to me.
I never had the patience to complete law school nor the patience to work within a system I found to be lacking in so many traits I find admirable. That's not to say there aren't many admirable attorneys, judges and other court officials. It's just that justice is not the overriding factor in many dispostions.
And that's why I stuck with writing position papers and legal opinions for NATO. It kept my Germany in good steed and I was able to really help in matters that I cared about.
If you find the law interesting, then take a few courses and see if you want to pursue it. Or study on your own only to have a respect for the process of law and its affect on a civilized society.
After all, you can't break the rules until you understand them.