Well-made with a good presentation from just skimming through it.  Covers many bases with plenty of photos.  Though overall, SWIM'd say this is more of a tek with some of the makings of a handbook than a true handbook.  A handbook would have to be somewhat open-ended and all-inclusive.  For example, it doesn't include the use of sodium-carbonate or of bubbler-pipes, which many on the site would contend are potentially the future of DMT.

Still, this will be incredibly helpful for those still using A/B techniques.  It just needs to be readily identifiable as more of a tek/handbook than a handbook.