school, complicated

Why do things have to be so complicated. I am in school, so I have to buy a text book, and some access code to get onto the site to do the work.. I go to the book store order both of them, the access code is out of stock!! so I get the book in the mail, and guess what it has a code that came with it bundled together. great, go online to put the code it, its not the right code have to buy the one that was out of stock now for 20 instead of 7 bucks. The teacher is trying to help me but just making everything more confusing!! I just want to learn about art!!