I'm not sure if you use IntelliJ, but there's a plugin for that called KeyPromoter which is great. Every time you do an action with your mouse, KeyPromoter pops up a dialog that tells you the shortcut key you could've used instead. I wish there was a plugin like that for other tools. (Small caveat: I last used KP about 3 years ago; I'm not sure if it's still working with the latest version of IntelliJ)