i think that's hot, like, somebody murdering me

ctrl+f, obviously: search/find, will search a page/document for a word or phrase

ctrl+c / ctrl+v: copy/paste, highlight text and hit ctrl+c and it'll show up again when you hit ctrl+v

ctrl+x: cut, it does the same thing as ctrl+c but it deletes the text, again it'll show up when you hit ctrl+v

ctrl+z / ctrl+shift+z: undo/redo. ctrl+z will undo whatever you just typed, ctrl+shift+z will put it back.

ctrl+a: highlights all the text on a page. this one is a real unsung hero.

ctrl+p: print document.

ctrl+s, ctrl+shift+s: save, save as (for when you're working on a document or project that needs to be saved. note that i don't think ctrl+shift+s works on microsoft word anymore for some godforsaken reason)

also, if you're working with text and you press control while pressing the arrow keys, your cursor will jump from word to word instead of letter to letter. saves a lot of time if you're proofreading/formatting.

be sure to check individual programs and system settings to see what other shortcuts might be available to you. some people have mentioned ctrl+t opening a new tab in a browser, for example.