I need help, Rabbits for Dummies?

I recently just got a 4 week old Angora-American Rabbit and I know nothing about rabbits. I got the started kit from PetCo which comes with a decent size cage (I know ill need a bigger one soon) Bedding, Yogurt balls, food mix, a water bottle and a wooden treat. I have been trying to research bunnies and how to take care of them but there are a lot of websites with a lot of different opinions. Any ideas on how to potty train, on what to feed such a young bunny, what kind of bedding to get, anything you can tell me or a REALLY good website would help! Thank you!