I'm trying to see how much data I've used on my iphone?

So I just got the iphone 5c a couple of weeks ago and I want to check to make sure I'm not going over the data. I went to usage and it says I've used 4.5 GB of 8.8 GB what exactly does this mean?

You can use it this link for checking data usage
http://ipod.about.com/od/iphoneplans/a/How-To-Check-Your-Iphone-Data-Use.htm
4.5 GB of 8.8 GB means out of 8.8 Gb still you have 4.3Gb.

The usage you're looking at is the memory usage, not data usage. If you want data usage, your carrier probably has a free app that will show it. For instance if you have Verizon there's an app called My Verizon Mobile. Look for it in the App Store.

Go to Settings > Cellular and scroll down to Cellular Data Usage, and that will tell you how much you've used.

The number you are looking at now is storage space for apps and such, not cell data use.

Go to settings, then to Cellular and look under Cellular Data Usage.

Your data usage and your storage are two different things.