You type in your username and password on the wizard 101 website. To login,after that you press the login button.After you login the spot where your username and password box was there's a list of stuff.Click promotional codes.Then there's a list of what kind of codes you want to put in.Click on one and then type in whatever code you know.But make sure the code is valid meaning { it hasn't expiried.}If it expiried it won't work.So get updated on when the code will expire. Hope I helped you. :}