The following links will take you to informative web sites with in depth discussions on the rules of curling:
World Curling Federation Rules of Curling, October 2014 (pdf)
(Source: World Curling Federation website Site also includes a link to a changelog from 2011 to 2014)
Mixed Doubles – The newest form of curling in the USCA, consists of one male and one female curler per team.
Skins format – An alternate method of scoring, often considered a more aggressive form of the sport.
Canadian Curling Association rules of play on the CCA web site.
Something only Potomac Curling Club has: Nuclear Curling.