Q: Accessing  Iphone 4s settings using my computer

Hi there thefonz_124,

Welcome to Apple Support Communities. 

It sounds like you want to free up some space on your iPhone 4s. To learn how to delete content from your device, just take a look at the article linked below.

How to delete content you've downloaded from the iTunes Store, App Store, iBooks Store, or Mac App Store - Apple Support

And, you can use this article as a guide for making changes to the content that is synced to your iPhone.

Sync your iPhone, iPad, and iPod with iTunes using USB - Apple Support

Ciao,

-Jason