Editing Facebook documents on iphone?

I have a Facebook group where I write scripts for YouTube videos we make. These scripts are in the form of Facebook docs. As far as I know, there's no way I can edit these documents from my iPhone. All I can do is view them. If there was some way to edit them it would help out so much with being productive on the go. Is there any way?
I'm even willing to jailbreak my iPhone if that's what it would take

Why do i need billing information on iphone app store?

So the other day i bought an app with my moms credit card and it went through fine but now i can't downlod any free apps it pops up red and says enter billing info, but its free? Befor i bought the app i could always doenload free stuff without doing that?

Flashing iPhone 4 to Cricket?

Now Cricket has the iPhone 4/4s/5… So, I was wondering if I got an iPhone 4 from someone I know and I flashed it to Cricket, will it work just as good since they now have iPhone's? Or will it not work as good? The iPhone 4 i'm getting is from Verizon.

App Store won't allow me to download certain apps?

I have an iPhone 4 which has restrictions on it. I can't get into them. I don't know if the restrictions have anything to do with the fact that I can't download certain apps. As in, the buttons that you click to install the apps are grey; you can't click on them. The only apps I can't download are KiK (which I'm not allowed to have), and any app that has to do with music (besides iTunes). How do I fix this? Or hack into the restrictions?