Welcome to the site (and the sport), hein. If you have any questions about the game or the sport in general, do not hesitate to ask. We have some very knowledgeable members who are always willing to help out.
Since you're new to the sport, my suggestion is to watch as many old fights as possible. Familiarize yourself with some of the sports biggest names, both past and present (Royce Gracie, Ken Shamrock, Wanderlei Silva, Chuck Liddell, Randy Couture, Fedor Emelianenko, Hayato Sakurai, Anderson Silva, Georges St. Pierre, etc.) Watch as many videos as you possibly can. Once you latch on to some of these fighters and consider them as some of your favorites, it'll become much easier to learn about the sport. You'll crave more and more and, before you know it, you'll eat, sleep and breathe MMA. This truly is a remarkable sport and it's nearly impossible to burn yourself out on it.
Sorry for little rant. Anyways, welcome aboard. Enjoy your new obsession!