i'm an information junkie so I have a whole slew of 3 ring binders, which i usually get on closeout at the office supply stores. not only festool, but i keep all my manuals in there along with printed supplemental manuals and any articles pertaining to that tool that i find useful. i usually underline and highlight parts or write notes and ideas in the margins because i like that old-school pen and paper thing. if the binder gets too full, i'll usually cull some things out and toss.
the problem i found with the online access is that often i can't quite find what i found before especially when i need it most--even bookmarking stuff is hard to go through if it gets too much. take the talkfestool discussion recently--troves of useful info can be gone from online for whatever reason. i kept a high capacity laser printer from my old business and if it's something i know for sure i'll be using, i print it out when i first run across it. the rest of the interesting stuff i bookmark and hope for the best.