How do you get the treasure book codes

To get a treasure book code you have to get a plush toy but books dont wook.You can get plush toys at Wal-Mart,Target, and Toys R Us but theres alot more stores you can go to.If you want to see them go to the CP home page and press toys.After you do that click on where to buy.Then click on what you would want to buy (ex. puffles, card jitsu cards, pins , puzzles) and you will see that some of the stores will get highlighted.The stores that are highlight are the ones that have the stuff you want.Then you simply go to the store and find what you want.That is how to get a treasure book code.