Open Spotlight Search

Spotlight Search is a powerful Mac feature you should already be using. Spotlight can help you search for any app or file stored in your Mac, and if it doesn’t find it, it’ll automatically search for the web for whatever you need. You can even use it to do calculations and conversions.
The best part is how easy it is to open Spotlight with your keyboard: all you need to do is press Command + Spacebar, and you’ll immediately see the Spotlight field pop up in the center of your screen.