how Copyright laws work

this is very interesting.

but does anyone know how to protect you work?

if i make a song or draw picture, how do i get copyright for it ?


on the other hand i learned about the concept of Copyleft,

this was a few years ago when i was interested in open source software

and i had linux running on my PC:

check out the wiki article [Here]

and the GNU page on Copyleft [Here]