All of the references I've found for Gnome 3 keyboard shortcuts list that alt+tab switches between applications and alt+` switches between windows (some actually say alt+~, but I think they're mistaken, and I've tried both anyway). Maybe that functionality works for Gnome 3 on Fedora or something, because no matter the key combo I try, nothing will switch between windows except for opening the alt+tab dialog and using arrow keys to navigate it (and at that point it's faster to just use a mouse..).

How do I quickly switch between windows in Gnome 3?