That's a very useful site. I have a pretty extensive FD system--great system and very affordable, if you don't need autofocus or the latest zoom lenses. Also check out this site, which has lots of info on the Canon FD system and other classic SLR systems:

Get your FD-era manuals here:

FD lens tests here:

More FD stuff here:

FD and EOS serial number and date code info here:

I've added them all to the link portal.