I don't think there is any web site that can help you obtain a CCW license/permit. And, technically, there isn't any "multi-state" license or permit, but there are some states that are widely accepted by other states under reciprocity agreements. The best (last time I checked) seemed to be Florida and Utah, each of which is accepted in a bit more than 30 other states.
You can get accurate
information about each state's laws and the application process at www.handgunlaw.us