Altering The Data Showed On Category View

I'm having trouble getting my head around how you expose data to show in the various areas of the CS cart site (version 4.2)

So as a for instance.

Lets say in the category view of the store (lets say Apparel on the demo store) you wanted along with the image of the product, the name of the product and the price, you wanted to show part of the product description how would you do that?

I feel it should just be the case of duplicating an existing wrapper, changing the name of the file and changing some code, but I'm having trouble finding any documentation that covers this.

Any help would be great.

What theme do you use?

What template do you want to change? (There are 3 templates by default)

What description do you want to show? (Full or short description)