"Lightning isa layer-2 technology built on top of Bitcoin which allows quick and secure payments. Lightning greatly improves Bitcoin’s usability by enabling very small payments to be processed quickly without having to settle on the base layer, which can take greater than 10 minutes in some instances.

This is a quick written + visual tutorial for Mac users on how to setup all the necessary software to use Spark to make payments with c-lightning. It only takes a few steps with some easily copy/paste-able commands..."

http://librecryp.to/using-lightning-on-macos