Six cards are dealt to each player in some combination of some up and some in the hole. Popular versions are one down, five up OR one down, four up, one down OR two down, four up. Players make their best five card hand with the six cards.
Sixty Four (courtesy of Tony Oresteen)
Dealt one down, four up, one down. A betting round follows each card dealt face up, opened by the player with the lowest hand at the table. In the end, the pot is split between the high hand at the table and low hand at the table, with cards speaking instead of players declaring. The high hand must consist of at least a Pair; if there is not one Pair or better at the table, the low hand gets the entire pot.
The low hand must consist of at least a nine-down; if there is not one nine-down or lower at the table, the high hand gets the entire pot. If no hands qualify for either high or low, then the pot is split up between those players still in the game up to showdown.