Hi - new to lionel o-gauge/fast track.

I want to create a simple reversing loop.  One switch and a loop.  Probably a second one at the other end of the run.  I don't think this sounds too crazy?

Can I do that in a way that the train keeps rolling and I don't have to interact with the switch?  I've seen a bunch of posts about short circuits and insullated tracks. Are those things I need be concerned with?

Thanks!