# Chapter 20: Using Lightning

> :information_source: **NOTE:** This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for learning.

In this chapter you'll continue work with the `lightning-cli` command-line interface. You'll create invoices, perform payments, and close channels — all of the major activities for using Lightning.

## Objectives for This Chapter

After working through this chapter, a developer will be able to:

   * Perform payments on the Lightning Network.
   * Apply closure to a Lightning channel.
   
Supporting objectives include the ability to:

   * Understand the format of invoices.
   * Understand the life cycle of Lightning Network payments.
   * Know how to expand the Lightning Network.
   
## Table of Contents

* [Section One: Generating a Payment Request](20_1_Generate_a_Payment_Request.md)
* [Section Two: Paying an Invoice](20_2_Paying_a_Invoice.md)
* [Section Three: Closing a Lightning Channel](20_3_Closing_a_Channel.md)
* [Section Four: Expanding the Lightning Network](20_4_Lightning_Network_Review.md)
