[ubuntu-uk] GPG

[Nick McMahon]

Hi, i was wondering if anyone knew much about GPG, im joining a site 
that requires me to auth myself with a GPG key, but i have never used 
them before!
i tried to find mine with
gpg --fingerprint nickm
but it returned:

nickm at nick:~$ gpg --fingerprint nickm
gpg: error reading key: public key not found

I guess this means i dont have one, can anyone please help me create one?

Nick