What are coin codes?
Coin codes are codes you get when you purchase physical stuff from Club Penguin. Coin codes can be found in Club Penguin plush toys to Club Penguin books. If you want to find out where you can get these codes then you should head over to Club Penguin's Store.
You will be led to this page. After you put your penguin name and your password you need to click login.
Okay, you will be given two options. You can either put in a book code or a coin code. Let's say you are trying to unlock an item using a coin code.
After you enter your coin code, click next. You should get a page telling you congratulations and what item you unlocked with the coin code you entered.