I’m only 17 and i got my first gig by doing an under 18 gig for a local promoter, he heard i wanted to start djing and gave me a shot, i figured if i impress everyone and him, i would get more work, luckily i did impress him and everyone else. The promoter has asked me to play his over 18 new years eve gig, he asked the police if i could because im only 17, they said thats fine all i need is a letter from my parents giving me permission 🙂 If your 17 i assume that a promoter wouldnt hire you, unless you are really good, because it would just be so much easier to get some one of age, for me i live in a small town with not many djs so it was quite easy, but just get your name out their and make sure you get to know the promoters in town and they get to know you.