Texas Holdem poker is a popular card game that involves two blinds - the small blind and the big blind. The small blind is posted by the player to the left of the dealer, while the big blind is posted by the player to the left of the small blind. The small blind is usually half of the big blind and is used to start the betting. The blinds are posted before any cards are dealt, with the blinds increasing in size as the game progresses. This ensures that there is always action at the table and keeps the game moving.