how do i quit my current job help?!!!


Okay ladies I need help I just started working at a family owned restaurant about 3 weeks ago and before that I had applied at many places hoping to get a call back. So long story short I got a call back from one of the places I applied I did the interview and got the job I decided to take it because im going to be getting more hours and better pay there but my question is since I already did the drug test just waiting on the results which are Gunna come back clean of course! How do I quit my current job because the manager at the other store said I would be starting this coming week.

BTW The place where I'm currently at is my 1st job ever that's why I need help lol.