World Vital Records is a great resource to research a family history providing access to U.S. Federal Censuses from 1790-1940, military records, Social Security Death Index and immigration records. My Heritage Family Trees is a free resource to access family trees on file or to create and store your tree.
The Historical Society of West Caldwell has developed a genealogy database in RootsWeb called Remembering New Jersey’s Essex County People.
Intro to Researching your Family History: Tips, Tricks and Resources
by Jessica Stauffer.