To quickly launch an application without even touching your mouse, press Command+Space to activate the Spotlight menu at the upper right corner of your screen. Then type the first few letters of the application name, such as “Tex” for TextEdit. Type as few or as many as you need for the application to show up in the menu as the “Top Hit.” Then press Return on your keyboard to launch the application.
Related: Use Spotlight Menu as a Calculator, Quitting Several Applications, Using Spotlight in OSX Tiger, MacMost Now 147: Spotlight on Spotlight, MacMost Now 169: Controlling the Finder with the Keyboard.
