MacOS – What keyboard shortcuts exist for Notes app is OS X

Go to System Preferences -> Keyboard -> Keyboard Shortcuts. Then, on the left side, select Exposé & Spaces. On the right side you will see the current keyboard shortcuts for Exposé and Spaces. If you double click on the shortcut command (literally double click ^1 for instance) you will be able to change this to whatever you want. Just do the key-combo you want to use.

So, once you double-click on the shortcut, it'll show it as editable. Then, press the keys you want the short cut to be, all at once, for instance press Apple and J at the same time, and it'll change the shortcut.

This has been covered in a screencast on the Ask Different Blog. I encourage you to watch the video, but I'll summarize here.

First, create a little AppleScript that presses the two keyboard shortcuts. Open AppleScript Editor (in /Applications/Utilities) and paste this in:

tell application "System Events"
    key code 123 using option down
    key code 124 using {shift down, option down}
end tell

Save that as a script in ~/Library/Scripts (create the folder if it doesn't already exist).

Now, install the app FastScripts. It's free for up to 10 scripts.
Open the FastScripts preferences, find your Select Word script, and assign a keyboard shortcut to it.

Now you can press your chosen shortcut in any app and the current word will be selected.