Letters of rec

Hey so I was wondering how letters of rec work? Like do your teachers give you the paper or is it all done electronically. Also what is the difference in like submitting letters of rec for uc app, common app, and such?

This will really depend on the specific application you’re filling out / how your school does it. It’s usually electronic though. You should just google details for the application you’re interested in filling out and also ask your guidance counselor for information.