There are many more sources out there. Please help us by listing any that are familiar to you in the comments.
BIRTHS
West Virginia, U.S., Births Index, 1804-1938
Fayette County, West Virginia, Births, 1866-1880
Fayette County, West Virginia, Births, 1881-1887 ?
Fayette County, West Virginia, Births 1888-1893
West Virginia Vital Records Fayette County Births
MARRIAGES
History of Fayette County, West Virginia (1830-1866), page 757
West Virginia Vital Records – Fayette County Marriages
Fayette County, West Virginia, Marriages, 1832-1854, 1865-1903, by Larry Shuck
Fayette County, West Virginia, 1830-1870, by Pauline Haga
West Virginia U.S. Marriage Index 1931-1970
West Virginia U.S. Marriage Index 1785-1971
Fayette County, West Virginia, Marriages at Family Search
Marriage Records at Clayton Library in Houston
DEATHS
U. S. Social Security Death Index (1935-2014)
Fayette County, West Virginia Death Records, 1866-1899
West Virginia Vital Records- Fayette County deaths
West Virginia U.S. Deaths Index 1853-1973
Fayette County, West Virginia, Deaths at Family Search
WILLS AND PROBATE
Fayette County Wills, V. 1, by Pauline Haga
West Virginia Wills and Probate 1724-1985
West Virginia Estate Settlements
Fayette County Will Books and Probate Records at FamilySearch.org
CEMETERIES AND BURIALS
Early Fayette Settlers, Part 1, Find-A-Grave
Early Fayette Settlers, Part 2, Find-A-Grave
Fayette County Settlers, born 1800-1815 (with pictures)
Oldest Fayette County Cemeteries
West Virginia U.S. Cemetery Readings
LAND AND TAX RECORDS
Sim’s Index to Land Grants in West Virginia
Surveys, Patents, and Land Titles - History of Fayette County West Virginia
Land Records at FamilySearch.org
Property Tax Records at Clayton Library in Houston
MILITARY RECORDS
22nd West Virginia Infantry, by Terry Lowry
West Virginia Revolutionary Ancestors, by Anne Walker Reddy
West Virginia in the Civil War (website)
Civil War in Fayette County, West Virginia
West Virginia in the Civil War (book)
West Virginia 5th Cavalry Roster
Military Records at FamilySearch.org
COUNTY COURT RECORDS
County Court Records Previous to the Civil War
Fayette County, West Virginia Court Records at FamilySearch.org
CENSUS RECORDS
Archive.org (They are there, but it’s hard work to do the searching.)
Fayette County (West) Virginia Records Vol. 1: The Federal Census of 1850
1870 Fayette County Federal Census
1840 Census of Fayette County, West Virginia
1860 Census of Fayette County, West Virginia
MISCELLANEOUS
Annals of Southwest Virginia part 1
Annals of Southwest Virginia part 2
History of Fayette County, West Virginia (on Ancestry)
History of Fayette County, West Virginia, by Peters and Carden, 1926
Panorama of Fayette County, by John Cavalier
History of Oak Hill, West Virginia
Historical Notes on Fayette County
A Portrait of Fayette County, West Virginia
History and Government of West Virginia
Genealogies of West Virginia Families