As regular readers know, we here at TUAW are huge fans of Quicksilver from Blacktree. The great thing about Quicksilver is how much functionality it puts at your finger tips. Of course the main problem with Quicksilver is how much functionality it puts at your finger tips! Even those of us who having been using it for years regularly find new and interesting things. There's just so much in there (especially with third-party plugins), but the documentation has been, to be frank, somewhat lacking (though it is getting better). Well now Howard Melman has decided to do something about that, releasing this beautifully illustrated 89-page users guide as a free PDF (Creative Commons). Anybody remotely interested in Quicksilver should have a look, and a big TUAW 'attaboy to Mr. Melman!