Cycles Newbie

Hello, I have a model that is fully UV Textured, it renders pretty nice in Blender Internal, however I want to make a test to see how it comes out in Cycles. But I have not idea how to set this up. If I switch to BlenderCycles it renders just a weird yellow some sort of basic material. I know and I am not the first one making this question since it is very basic, is there any tutorial out there to point me out on what needs to be done as basic steps to get something ?

Thanks in advance.

there are a lot of nice tuts for beginners at cgcookie:

several target cycles as well