Rules of Card Games - Hearts
John McLeod's Card Games site has rules for Hearts.
pagat.com

Yahoo! Games - Hearts Rules
This section gives a brief history of the Hearts classic card game, in addition to some general rules and basics of the game that players need to abide by while playing online at Yahoo! Games.
games.yahoo.com

Rules for Hearts
Rules for Hearts by kemenel.org.
kemenel.org

MSN Gaming Zone - Hearts Rules
Basic rules to help you learn how to get started playing Hearts.
zone.msn.com

GameRules.org - Hearts
Offers detailed explanations and rules about how to play Hearts game and its variations. Each rule article is broken up into logical sections. Also, offers rules to play popular card games, board games and dice games.
gamerules.org