I appreciate the tutorial. I had hoped that the article applied the &quot;Learn-X-The-Hardway&quot; approach...which appears has disappeared from the internet with the acquisition of Gitorious by Gitlab, but is multiply forked on Github:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;search?utf8=%E2%9C%93&amp;q=learn+x+the+hard+way" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;search?utf8=%E2%9C%93&amp;q=learn+x+the+hard+...</a>