Having realized I know nothing about copyright laws, I looked through the internet and found WIPO.
http://www.wipo.int/about-ip/en/ipworldwide/country.htm
Alternatively, you could always do what I do, and not reveal your intellectual property for everyone to see. Though that doesn't stop corporations from stealing my ideas.
That's on the rules of copyright. As to how one gets something copyrighted, I have no idea whether there's a process or whether you simply have to put your name and the date on your work (which is what I was told several years ago). Keep in mind I live in Canada, which is like the USA, except with more freedom.