If you use the Calendar app in Mac OS X, you already know how to add, delete, and manage events manually by now. What most people don't know is that the Calendar app in OS X supports natural language input, which makes adding events much quicker. Here's how to use it:
That's all there is to it. While the OS X Calendar doesn't support natural language as well as other alternatives such as Fantastical for Mac does, it's certainly something and does make entering events slightly more convenient.