How to download Phonezoo to the iphone 4s

Ok… New iphone owner. Please explain this to me like I'm a 2 year old.
How do I download and use phonezoo ringtones on my iphone 4s?
If you know how to do this, please tell me in a step by step explaination… Like I'm a 2 year old. LOL
I do have an itunes account, but I don't not have a mac… If that makes any difference.

Go on your computer (doesn't matter if Mac, pc, etc). Go to phonezoo.com. Make an account. Sign in. Give them your phone number and brand of phone and all that. They will ask you questions. Then go to the search bar and type in anything you want. Tell them to send it to your phone. You'll receive a text message saying to download it. Download it and enjoy.