I've recently started typing up some of my astronomy notes on Evernote for organizing and refreshing my memory on things I learned over the past year. I found it kind of annoying how I can't use LaTeX on Evernote but almost half of my notes are filled with symbols like ∴ , ∝ , and ∵ inline with words. I found out that for Macs you could preset text strings that automatically get replaced by something else. This is pretty magical and will save a lot of time, especially for people who type math stuff alot. It could probably be good for putting in acronymns too. You can find this under System Preferences -> Keyboard -> Text