First release planned for May, 2019.
Skilling runs on Drupal, an open source content management system (CMS) popular in education. Schools from Oxford and Harvard to your local K12 use Drupal. You can see a partial list of institutions running Drupal.
You can download Skilling from Skilling's project page on Drupal.Org. You can also get Skilling with Composer, or a combination of Git and Composer.
Skilling's documentation explains how to install the software on a web server. After you've installed Drupal, of course.
A development version of Skilling is available now. The first production release is scheduled for May, 2019.
If you want to experiment with Skilling, you can run it on a low-cost shared web host. Reclaimed Hosting is an inexpensive, education-oriented hosting service that can run Skilling.