Some Clutch questions

[rx7Noobie]

My friend got a 01 integra and he had the stock clutch and he would go to shift and the car wouldnt take the gear.. I guess thats how worn it was and he still occasionally spins the wheels lol, but obv im assuming the higher the rev to the burnout when u stomp the gas and dump the clutch the more damage is done to the clutch but how much damage is really done to the clutch? I got my car from a police auction and unlike my friends clutch whos pedal doesnt have much resistance mine has a good amount of resistance, also i wa wondering my gas pedal freely depresses about 2 1/2 inches before it even gives gas is there a way to tighten that?