The present-day Czech Republic in Central Europe borders Poland to the northeast, Germany to the west, Austria to the south, and Slovakia to the east, encompassing the historical territories of Bohemia and Moravia, as well as the small, south-eastern portion of historical Silesia. If you have ancestors who came from this small landlocked country, then you won't want to miss these five online databases and resources for researching your Czech roots online.
4,000 volumes of the Registers of Births, Marriages and Deaths of Jewish communities deposited in the Czech National Archives have been digitized and made available on Badatelna.cz. This research guide
provides a basic overview to accessing the records, which cover the years 1784–1949.
The Czech National Archives holds the household registration records for Prague and some regional areas, and has been working to digitize and make these "conscription" records available and searchable online. The records cover some areas of Prague (not comprehensive for all of Prague) 1850-1914, and new records are being added semi-regularly.
The ability to research online in digitized records is amazing, however researching Czech ancestors also takes a certain amount of basic knowledge. This free research outline by Shon R. Edwards is slightly out of date in terms of online links and resources (last updated in 2005), but provides an excellent overview for anyone new to Czech genealogical research. Additional guidance for researching Czech ancestors can be found in the FamilySearch Wiki: Czech Republic