GOOGLE directory - You'll find links to many sites with a variety of experts. Here's the shortcut: http://www.google.com/Top/Society/Organizations/Professional/

CataList - the OFFICIAL list of LISTSERV lists.  Lurk for awhile and then post your own questions when you have a good idea how the list operates.  Be sure to save the first messages you get from the listserv administrator and read them carefully.  Experienced listserv participants are touchy!  They expect listserv etiquette to be followed and won't hesitate to flame you.  That said, don't hesitate to join a list!