Hi there, welcome to the forums. :)
Yeah there are a lot of tutorials that assume different levels of modding experience. To begin with, I'd just download KotOR Tool and get it installed. Then just casually browse around the different games files within KotOR Tool to get yourself familiarized with what's out there. Then when you're ready to get your feet wet, maybe start with some of Achilles' tutorial walkthroughs here (
http://www.lucasforums.com/showthread.php?s=&threadid=143456). These assume little to no modding experience.
Later on, when you know what you want to do and have a kinda-sorta idea how it could be done, the other tutorials will make more sense. And if you get stuck and the search button isn't helping out, feel free to post a question. We've all been there. :p