- Ancestry.com: A pay site which has MANY records, U.S. and International, including the entire set of U.S. Federal Censuses.
- Social Security Death Index: A lookup of Social Security Numbers for those people who are deceased. Here's an example of the form: SS-5
- FamilySearch: Many, many indexed records (free) from when the Church of Latter Day Saints combed the United States and beyond for data to help them fulfill their genealogy requirement to trace back to Adam & Eve (as I understand it, anyway). It also has info submitted by researchers over the years. I don't know what their plans are for this but it's free for now.
- Vital Records: Tells where to write for birth, death, marriage, and divorce records for each U.S. state.
- Cyndi's List: The premier collection of useful websites related to genealogy. It has been online and growing for MANY years.
- Ellis Island: Millions of immigrants traveled through this island and the ship's manifests are available here. It is searchable but keep in mind the names were many and varied. The site is currently free although you may order printouts of the images for a fee. This is kind of silly because you can download the images so don't ask me why somebody would spend the money.
- Day Of The Week: What day of the week was January 4,1953? This site let's you easily figure it out. Or you could find an old calender.