The game of blackjack is originated from French casinos in around 1700 where it was called as "vingt-et-un" ("twenty-and-one"). The origin of this game in US can be traced since 1800.
As far as the rules are concern they are not fixed, they vary from casino to casino and area to area. For example, a casino in downtown Vegas may have different rules than one of the Vegas Strip casinos which may have different rules from a casino up in Reno or Tahoe. As in same manner rules in a casino in Freeport Bahamas may differ from those in Atlantic City. So it is very important to know and learn the rules of a particular area and the casino before you set to play the game.
To set a blackjack table all you need is one dealer and one to seven players. The first seat on the dealers left is referred to as First Base, the first seat on the dealers right is referred to as Third Base. A printed betting square is felt on the table in front of each players seat. The chip tray is placed immediately in front of the dealer. On the dealers left is the deck or shoe and beside that should be the minimum bet sign, which you ought to read before sitting down to play.
On the dealers immediate right is the money drop slot where all currency and tips (chips) are deposited. Next to the drop slot is the discard tray. Play begins after the following ritual is completed: the dealer shuffles the cards, the deck is "cut" by a player using the marker card, and the dealer "burns" a card. Before any cards are dealt, the players may make a wager by placing the desired chips (value and number) into the betting box.
For various reasons the player may occasionally sit out a hand or two, no problem for that. Even it is a good strategy to sit out for few deals when dealer become lucky and every one is loosing badly. It may so happen that you can ask to leave the table until you are prepare to play again if you are sitting ideal for quite a few hands and good number of people are waiting to play at your table.