In order to do this you have to first create account at one of these:
http://join.secondlife.com/
http://www.entropiauniverse.com/
http://www.eveonline.com/
If you want to make CASH and will not play any of above three games, then simplest choice is Entropia Universe as they will transfer your income to real money without hassle directly.
Then you create account here: http://goo.gl/WhtfQl
In order to create account you have to have already started playing one of above games and at least exit tutorial area.
After that is done, you will be paid in currency of your choice, game currency, for tasks as simple as listening to a radio station.
