HCC Configuration Guide
Two most usable documentation roots would be:
master branch doc root - this is where the stable version is;
dev branch doc root - this is where the active development is happening. Raw stuff, sharp edges. Kick it till it breaks, let us know where it broke, we'll fix it and let you kick it more so it stops breaking.
And to save you a click,
If you need any help - the user forum is a click away.