The American Bridge Contract League website features an in-depth tutorial on using a Duplicate Bridge scoring chart. The website also offers directions on keeping score during Team, Chicago and Rubber Bridge matches.
The Duplicate Bridge tutorial instructs the scorekeeper on important terms and rule pertaining to the game. It also goes over the point system and scoring possibilities inherent to the game. The site also goes over the methods for score comparison necessary in determining the winner for either Team or Matchpoint duplicate games. Aside from directions, the site has a visual example showing a typical completed duplicate score sheet for reference purposes.