Im so nervous to get a job!!!.?

im 16 and want one really bad, but im nervous. should i just say screw it and go out look or what.....i have never had a job. is it like what they say oyur first job is? every ones on you all the time and its bad? idk..where should i look i applied at stator bros. but never got a secong interview should i do mcdonalds?