There is a lot of information on www.rootsweb.com. There is a lot of bogus genealogical information out there on the net, most of it comes from people posting the same incorrect information over and over again. Always look at the cited sources to determine the reliability of the information.

There are also some very good family genealogical information websites out there, you can find them by googleing the family name along with "family tree" or "genealogy". I found a lot of good information, pictures, maps and stories by using this method.