Related or useful information
Prime Time Freeware
The LinuxPPC Project
The Linux Home Page
Red Hat Software
CMU's Mach Documentation
CMU's Mach Home

Hardware Tips
PowerLogix G3 Upgrade Support
Radiance Install on MkLinux

MkLinux doesn't run on the older 68k Macintoshes, but one of these projects might!
m68k Linux Project
NetBSD/mac68k
OpenBSD/mac68k

Ftp Sites of Use
ftp.mklinux.org