There are a few basics you need to learn when working with Runner.
Installation
Download Runner, then double-click the .sketchplugin bundle to install. On launch, your trial starts.
Tutorial: The basics of Runner
Search Commands
There are 6 Search Commands that each have their own specific functionality. You switch between these commands with the tab key.
Launch Runner
To launch the Runner search window, you need to set up a hotkey. You can do this during onboarding. You can always change it in the Shortcuts section of Runner Settings.