Gels: when to add them in and how

Hey guys!

I’ve always been a little nervous about consuming foods while running because I’m worried about a stomach cramp on the road. As such, I’ve never used gels before or any easy carb on-the-go in my training.

I was wondering, at what point )distance, maybe) is it smart to start incorporating gels into a workout? Are there any preferred types of gels? Are there any alternatives to gels? Since I think gels can get pretty pricy.

Thanks!