It's been tapped here in the past. I've referred to it a few times in posts and agree it's a valuable resource.
Another one I came upon just recently is the Womb @ The Womb - Powered by Electricity!
It's got a mountain of great info there if you have the time to read it. Another goldmine for the audiophile societies.
Well I am not sure it's one of the best resources,
but there is recording info on this website which I'm developing for aspiring engineers / bands looking to make decent recordings without splashing much cash. In particular, the series Sessions On A Shoestring has had positive feedback from various members here, and I'd hope it's at least helpful to a few more people looking to run their own sessions.