This volunteer run project is a wonderful resource. This US page will take you to the state pages, and from those, you can get to county pages. John Fuller's URL will get you a complete list of mailing lists, and lists of newsgroups. Chris Gaunt's URL will get you an extensive list of web pages. Brian Leverich and Karen Isaacson, volunteers with a mission, have built a genealogy site and organization for us all.
Access is entirely free.
They ask for donations, but nobody pressures anybody for anything. I suspect this is bigger than they ever expected it to be. They have great resources and great ideas. This is the USGenWeb page for all of Illinois. This page is maintained by Joan Black Lund, who assists with the ISGS page.