Most of the time the information is already in the wiki. And it's nice how the installation guide covers every corner case. I smoothly migrated my laptop from a simple installation to luks+lvm, just by following the guide. You can actually read TFM because it's already there. It's also kinda funny how many google searches that relate with configuration issues on linux link back to the arch wiki. Definitely documentation is one of the stronger parts of arch.
That's often true, but I was disappointed that this was little more than a rephrased version of what's on the Arch Wiki.
I love the Arch documentation on the Wiki. It's perfect for me– laid out well, easy to follow, arranged in a logical wiki order, and stuffed with insanely useful tips. The pages on stuff like tmux are fantastic.