GameColony.com presents the most popular Anglo-American vesrion of checkers (or draughts). You can read about the rules of Anglo-American checkers here.
Other popular version of checkers include German or Russian checkers (also
called 'Damki' or Pool Checkers). There are 2 main differences with Anglo-American version : (1)
in German or Russian checkers the kings can jump over multiple squares (flying king) and (2)
in German or Russian checkers the ordinary men can capture backwards.