In this tutorial from http://babymonkeystudios.com we will investigate editing the products list that displays in feature products and category pages. This should show you how to both make such a change, and how to divine where the change is needed. You can apply the lessons learned to most any type of change you want to make in the templates. 

Tools Used: 

• Xampp http://apachefriends.org
• Sublime Text 2: http://www.sublimetext.com/2
• Webmaster kit module: http://market.x-cart.com/addons/webmaster-kit.html
• Custom skin module: http://market.x-cart.com/addons/custom-skin.html