This repository was the source for the Ember App that used to power the Ember.js Guides. This work has since been extracted into Guidemaker and the Guidemaker Ember Template.
The source for the guides is still avaliable in the same place in the Guides Source repository.
All further work will be done on Guidemaker, the Guidemaker Ember Template and Guides Source.
If you are interested in contributing then you can check out the contributing instructions for the Guides Source.
If you have questions you can join the #dev-ember-learning channel in the Ember Community Discord.