Blackjack Information Online

• Blackjack Info
  A very useful resource by Ken Smith - a well know blackjack player and author
   
• Blackjack Strategy Trainer
  Hit or Stand offers an excellent startegy trainer for blackjackpot players
   
• Wizard of Odds : Blackjack
  Michael Shackleford explains the math behind blacjack games.
   
• Blackjack Math
  Mathematics, strategy and odds information
   
• Wikipedia : Blackjack
  An article with general information such as the history of blackjack