OrganicRobotics

I've been wondering if staging boosters is the way to go because I've been having a bit of trouble getting into orbit without burning too much fuel. I'd like to get to orbit by the end of my second stage but I'm just short of enough power without using too much weight. If i remember correctly, in real life, they disconnect the empty rockets so that it isn't carrying around dead weight. Does this work in KSP too?