If you release the clutch too quickly the car will stall. If the engine sounds like it is going to stall, then hold the clutch where it is or even push it further in slightly. Excessive engine speed while the clutch is between fully up and fully depressed will wear out the clutch parts prematurely resulting in slippage or smoking of the clutch parts at the transmission.When driving, when your RPM reaches about 2500 to 3000, it is time to shift into second gear. Remember though that it depends fully on the car you are driving what RPM the tachometer will reach before you must change gear. Your engine will begin to race and speed up, and you must learn to recognize this noise. Apply pressure downward on the clutch pedal and guide the gear shift knob straight down from 1st gear into the bottom left position.
Some cars have a "Shift Light" or indications on the speedometer that will tell you when you need to shift so you don't rev the engine too