I'm wondering how many people connect their guitar to a PC? Anyway, since this project is for a course you're taking, I think you should really be seeking that knowledge from that course. If such a technique really falls within the realm of that class, I'd think the information on how to do it would be available in the materials normally used for such a class. And, if it's a project that requires independent research, I think you may not find much help in most computing forums, due to the very unusual and specialized nature of your project.