Hi,
I think the best way to approach this for total beginners, is to probably do a little research to understand what your getting into and to also know what requirements are needed for this sport. I suggest looking for ebooks or videos that will give you a little run down on things. Theres even free ebooks out there, I came across this one called The History & Art of mixed martial arts and its totally free! The site is www.fightfaninfo.com you can check it out if you want but the main thing is first be educated. Dont want you doing silly things and getting yourself hurt before you actually learn the proper techniques.