Welcome to the site. It's always nice to see a new member, especially one, who wishes to help out.
The easiest way is by clicking a few adds everytime you're one here (that helps the site cover the server costs).
You can also try your skills at review writing.
HERE is a list of games that are waiting for reviews (but the list is not completely up to date). If you're interested you can send a PM (personal message) to Tom or Kosta (but you can also PM me).