i would put your car on a ramp, remove the top fill plug on the tranny (10mm hex) and stick your finger inside to see if you can feel oil in there.
if not, you're low on oil.
also check your clutch fluid level.. and the color. if it's low or like orange color, time to
change it with some fresh brake fluid.
you're 18, you got plenty of time to learn the basics of car maintenance.