not so much work as it is just paying attention. you will get a much larger yield out of a small space with scrog then just growing for the top cola and a few sides, since scrog basically turns every bud site into a cola. if you haven't grown before though i would suggest growing normally, or sea of green, before attempting scrog.
there is a lot of info about it if you would like to learn more, google scrog and you will get some useful stuff. also read through the FAQ sections on crimping, pruning, how to tie down, etc. all of those methods apply to scrog, as well as general growing to improve your yield.
all in all, if its your first grow, just let them grow, feed them right and sing to them daily, if not more (i swear it works!) and you will have some marvelous bud!