Installing a new module in Drupal 8

Draft (work in progress) -- AWAITING PEER REVIEW
Overview: 

In this lesson, we will see how to install a new module. For this example, we will install the Administration menu menu

Steps: 

1. Go to the project page of the module on drupal.org, in this case https://www.drupal.org/project/admin_menu and download the drupal 8 release of the module. You will get a zip or tar archive

2. Extract the archive in modules folder inside you drupal directory.

3. Now go to the Extend option in the admin menu of your drupal site. You will reach this url - http://localhost/drupal/admin/modules

4. Find your module, Administration Menu in this case, in the list of modules displayed, tick the checkbox next to it and click on Save Configuration. You are done!