(updated February 21, 2010)
Here is how to get started with any emulator:
SheepShaver Setup Guide (for the OS X port)
PearPC Setup Guide (emulate a PPC Macintosh running OS X)
Kegs32 Setup Guide (emulate an Apple IIgs)
SheepShaver Setup Guide (for the Windows port)
Basilisk II Setup Guide (for the Windows port)
Mini vMac Setup Guide (for the Windows port)
Executor Setup Guide (simulate a Macintosh running System 7)
SoftMac Setup Guide (emulate a 68K Macintosh in Windows)
We've also written a few guides dealing with specific issues:
Guide to extracting a ROM for SheepShaver while using Basilisk II
Capturing a Mac ROM Image (capture a ROM image from a real Mac)
Getting online in Basilisk II for Windows
Getting online in SheepShaver for Windows
Appletalk for SheepShaver/BasiliskII for Windows 7/Vista/XP (32-bit)
Appletalk for SheepShaver for OS X
Convert .DMG to .ISO (helpful for PearPC users)
PearPC Control Panel (download and information)
And a few miscellaneous articles:
An Instant Messaging solution for the 68K Macintosh
Benchmarks of the major 68K emulators
Guide to helpful 68K Mac software
System 6 Hell (disk images for Mini vMac)
HFVExplorer (download and information)
Escape Velocity (a few notes about playing Escape Velocity on a PC)
A Macintosh emulation compatibility chart
Mac Abandonware Notes (I wrote this!)
There are a few leftovers from our old website that haven't been wikified:
We did some interviews back in the day. I think they date from mid-2000: