I need to replace my wheel bearing and I am not sure how to do it. I was told that I need a bearing puller, so I went to auto zone to try and get one and they were confused on what I needed it for. So, if any of you would like to help me out, I would appreciate it. I have already bought the $70 wheel bearing and it's just sitting in my car.

I need to get this fixed soon, because it's getting really loud and bad, very quick.