Next up on my little emacsian adventure: changing windows. Guh! C-x o just doesn't work for me. I'm too young to have this deeply ingrained in my head. I cut my teeth on fancy pantsy editors that C-<tab> from open file to open file, and emacs just needs to do the same.
(global-set-key (kbd "C-<tab>") 'other-window)
(global-set-key (kbd "C-S-<tab>") 'other-window-prev)
Done.
For what it's worth, I went down a lengthy rabbit hole before finding these 'other-window and 'other-window-prev functions. We won't talk about that; it's a cold, dark place.