http://www.wiljam.com/index.htm
This is a good site I am finding.
Rather than a donation I bought the cd-rom, so I have that on my laptop if I am away from internet access.
So for just browsing the material, seems great.
I also picked up Phil Croucher's book on fleabay. For your use, don't get the latest edition though, as it's bout 4 times the price
Seems well written what I've browsed so far.