Everything that is required is a working e-mail!
First of all you need to get hold of some Warhammer Online beta Keys
for those of you who dont know how to get those (Really simple)
search for it or read this little mini-guide here
Code:
Go to gamestop.com
search for warhammer
select warhammer online collectors edition
select add to cart
click on checkout or something similar
make an account if you dont have one when asked to log in.
fill in the info with phony info EXCEPT your e-mail(make a new one if you're paranoid) go to fakenamegenerator.com for copy-paste ready info and credit card numbers
and then when you have finished the transaction you will get a mail with the beta key, and a couple of days later you will get an email saying that the transaction failed, but you will still have the beta key :D
now you can follow my guide further or start playing warhammer beta :)
NOTE: I did not come up with the beta-key method, only what to do with them after 
NOW THE MAIN THING
After you have gotten the beta-keys, make an e-bay account or any local e-auction site that you know about and post the keys there. on e-bay they go for around $60 per key!
once you have sold them, you will have sweet cash to pay for those expensive gamecards and everyone is happy 
whole precess takes around 5-10minutes (not included waiting for a buyer :P)