The documentation is in a quite early state, nonetheless it is already quite complete. If you want to know Stag inside out you should read the full documentation, which also contains an analysis of the used tools. If you are a more or less experienced embedded developer and Debian user the quickstart guide should be enough.
Compressed pdf of the presentation at Fosdem 2004.(outdated)The quickstartguide has been updated. This now contains the minimum of documentation to use the Stag framework to start building the new Emdebian distro.
Quickstart guide in pdf.(updated 4/07/2004)