IMO, it's always best to start at the beginning.
Start with Fundamentals. If you already know the material and can play through the lessons... good on you... it'll take you a very short time to get through the basic courses. I suspect; however, that you will learn something and hone some chops in the process.
When you're finished, you can ask the question again about which genre.
Good luck, have fun.
EDIT: Can ya' tell I was typing my post while moosehockey18 was posting his? 
"It takes a lot of devotion and work, or maybe I should say play, because if you love it, that's what it amounts to. I haven't found any shortcuts, and I've been looking for a long time."
-- Chet Atkins
-- Chet Atkins