A basic strategy in Blackjack involves making optimal decisions based on your hand total and the dealer's upcard. The aim is to minimize the house edge and maximize your chances of winning. Key actions include when to hit, stand, double down, or split pairs, guided by specific rules that take into account the probabilities of various outcomes. This strategy typically emphasizes playing conservatively against a dealer's strong cards while being more aggressive with favorable hands. Mastering this approach allows players to make informed choices throughout the game.