I really suck at coding and I literally have no experience in creating Wordpress themes. I followed the guide on how to create a Thematic child theme and I did it. Next it says to make a background I have to use CSS does that mean I enter the code in my styles.css or functions.php and how do I enter the code?
EDIT: Can someone also tell me a link or video to a step by step tutorial. Someone gave me a tutorial but it was extremely brief and didn't explain anything. I am looking for a very long and detailed tutorial that explains Wordpress themes for dummies.