How to Safely Build Your Credit History

I’ve heard from several high schoolers and early college students asking for advice on how to build up their credit history in a safe and responsible manner. One of them is “Jenna”: I’m currently a freshman at Washington University. I know I need to build up some good credit for the future, when I have to get a car loan and such, but I don’t know where to start. I’m worried about getting way into debt like some people I know. Building a positive credit rating was one of the things I did right