So I wrote the very first words of this thing before 3.0's first public beta release, when the official manual was still very much out of date. I continued to work on it off and on (mostly off) for several months, and finally finished off the first version today. Warning: it really is huge. The archive containing the .pdf and some custom crosshairs is 1.28 mb. The document itself is 50 pages of text and images.
Comments and criticism are appreciated, from the most piddling of typos to sweeping disagreements about how I've structured it.
It needs a cover image of some sort, so if any of you namby-pamby art-type people want to come up with some sort image brimming over with justice and freedom and what have you, go for it. If anyone makes something especially righteous, it'll be the cover of the next release and they'll get credit in the manual. For whatever that's worth.
#nslearn people - you're welcome to upload this over there. Hell, anyone can distribute it however they please, although I'd appreciate it if you kept the original archive intact. Since it professes to have the fixed shotgun crosshair along with the manual, it'd be weird if there were copies floating around without that crosshair.
For the bored and the curious, here's the download link: enjoy.