First suggestion: The friction point is key. That's the spot on the clutch where the engine begins to engage. My best suggestion for you would be to go find a fairly steep, but seldom used road, preferably with a light/stop sign at the top. Sit at that light, and for a full red cycle at least, do not use your brakes. Ride the friction point on the clutch and the gas just enough to keep the car from rolling backwards, but not so much that you start going forward.
Second suggestion: Watch the speed with which you engage/disengage both the clutch and the gas when shifting. Both should be VERY smooth and simultaneous. You want the clutch to only be fully engaging as you are coming off the gas. You want the clutch disengaging as you are coming back on the gas. The way it was explained to me was to pretend I was driving a limo. A little practice and you'll be fine.
Third suggestion: Learn how to power shift and tell any passengers that you are just working for maximum acceleration
