That is an unsolved problem in general.
Anything 'in print' ages, in technical fields it ages very fast.
But pick a format that might keep up with day-to-day changes and that results in a lot of disconnected information impossible to organize.
Twobob and I thought that a 'structured wiki' might be the answer.
We made a start at one:
http://wiki.knetconnect.com/twiki/bi.../TWiki/SiteMap
a couple of years ago, but it never picked up much interest.
(Note: I will probably have to put back up the 'leech guard' panel RSN - that site seems to attract DOS attacks.)