Most of which won't be immediately useful for most of the GUI stuff we're talking about.
Man pages are good, but are flat and become unwieldly if there's a lot of documentation.
OK, but you're missing the fact that there is a general help interface. Now granted, this is only going to tell you about the fact that Sawfish is separate, but it will get you going. At this point you'll go looking for sawfish docs, and find them in the info section from the top help page. This is baseline functionality. Manuals are great for someone who's never used the software before, but when you need help you have to search for the thing giving you pain.