Online Genealogy Resources

Comprehensive Sites:

Genealogy.com - Most services by subscription; the "learning center" is especially valuable for new researchers.
GenealogyPortal.com - Excellent searchable site for locating other resources on the web, including libraries, historical sites, primary records, etc.
Gensite - Listing of some 2000 web sites and the number of "hits" each receives weekly; all listings are free web services in genealogy.
RootsWeb.com - Sister site to Gensite above; searchable web directory in all areas of genealogy; good place to start.
GoTo Family Tree - Commercial site listing resources for purchase; this includes software, print guides, retrieval services, and internet resources.
www.familysearch.org - the Family History Library's database, which contains millions of names; a project of the Church of Jesus Christ of Latter-Day Saints.

Gen Web Projects:

US GenWeb Project - Group of volunteers working together to provide Internet websites for genealogical research in every county and every state of the United States; non-commercial and fully committed to free access for everyone
The UKGenWeb - Part of the World GenWeb project; provides query boards, resource assistance for searches in the United Kingdom.
WorldGenWeb - Free world-wide research assistance from volunteer professional genealogists.

National Sites:

American Family History Immigration Center on Ellis Island - Research the Immigration records available at Ellis Island.
Online Census Information:
1790-1960 University of Virginia Census Browser
1930 Census Census Bureau
1990 & 2000 Censuses Census Bureau
Geographic Names Information System (US & territories) - Query form from the United States Geographic Survey; locate any known geographic or place name in the United States.
National Archives (Washington DC) - Searchable; provides many of the finding aids, guides,and research tools that can prepare you for a visit to one of Washington's facilities or for requesting records from the National Archives.
Social Security Death Index - Ancestry.com site; some services by subscription only; searchable social security death index with links to some free features.
U.S. Bureau of Land Management land patent database - Image access is provided to more than two million Federal land title records for Eastern Public Land States, issued between 1820 and 1908.

People Finders:

Anywho.com
Bigfoot.com
Switchboard.com

Message Boards:

GenForum (Genealogy.com)
Genealogy Mailing Lists (RootsWeb.com)
FamilyHistory.com

State Vital Records:

United States: State Vital Records - Web directory for internet vital statistics for all states.
Search your ancestors: Vital Records - Sub-directory of the site above which provides a free search of the Ancestry.com site for vital records.
UC Berkeley, 1970 Census. Selected files from the 1970 Census available by FTP.
Univ. of Wisconsin, Madison 1970-80 Census available for download by FTP.
Examples of on-line Vital Statistics:
CA Birth Index 1905-1997
CA Death Index 1940-1997
IL Statewide 1763-1900 Marriage Index
KY Death Index 1911-1992; Marriage & Divorce Index 1973-1993 - Kentucky vital Records Index
NV: Clark County (Las Vegas) Marriage Index from 1988
OH Death Index 1913-1937

Associations:

Association of Professional Genealogists
Federation of Genealogical Societies
National Genealogical Society

Search Engines Directories:

Google Geanealogy Directory
Yahoo Genealogy Directory