Plan 9 Documentation (as of Mon Sep 26 08:23:01 CES 2005)

Using rio - An introduction to using the window system.
Using acme - Acme is a hybrid window system, editor, and shell.
Using plumbing - The plumber works behind the scenes to connect various programs in interesting ways.
Using troff - Formatting text for printing on a typesetter.
Using PQ - The implicit relational database client and server.
Using vncv - Remote use of applications on other OSes.
UNIX to Plan 9 command translation.
Connecting to other OSes - ssh, telnet, u9fs, SMB, NFS...
Connecting from other OSes - drawterm. (also see v9fs).
Mouse vs. keyboard.
Tip o' the day.

Plan 9 Documentation