how to play 7 card stud

Seven-card stud is a variant of stud poker. Until the recent increase in popularity of Texas hold 'em, seven-card stud was the most popular poker variant in home games across the United States, and in casinos in the eastern part of the country. Seven-card stud is also played in western American casinos, but Texas hold 'em is far more popular there. Two to eight players can play.
The descriptions below assume that you are familiar with the general game play of poker, and with hand values. They also make no assumptions about what poker betting structure is used. In casino play, it is common to use a small ante and bring-in. In home games, it is typical to use an ante only.
Seven-card stud is the "S" game in H.O.R.S.E.
Play proceeds as follows ("player" refers only to those who have not folded and are still in the game), with betting rounds in-between.
Betting is clockwise, the player with the highest poker hand showing starts (ie 2-2 beats K-Q).
Virtually all casinos deal:
Two cards dealt face down to each player, one card dealt face up to each player upcard to each player (Fourth Street) upcard to each player (Fifth Street) upcard to each player (Sixth Street/Turn) downcard to each player (Seventh Street/River) showdown Mnemonic: Two-four-one (Two down, four up, one down.)
Some tables remove one betting round (making the number of betting rounds equal to Texas hold-em) by dealing four cards, two down and two up, in the initial deal. "Fourth Street" is thus not played as a separate betting round; the first single upcard round is "Fifth Street".