Handling "What are blackjack rules for dealer?" well means going past the printed rules. Blackjack rules fit on a card, but the game at a real table carries habits that the card leaves out. Players meet the dealer one hand at a time, cards are dealt face up or down by house rule, and every decision, from standing to doubling, has a best answer. Knowing the rules for beginners and the etiquette around them is most of what separates a calm session from a confusing one.
Blackjack is easy to play at home with a single deck and a friend taking the dealer's role. Playing by yourself works too, with practice apps that deal against a virtual dealer. Whether it is illegal to play blackjack at home for money depends on local law, which often allows private games without a house cut and forbids running one as a business. For beginners, home practice is the cheapest place to learn the rules and the basic strategy chart before sitting at a live table.
Whether blackjack is dealt face up depends on the house. Many shoe games deal the players' cards face up, while the dealer takes one card up and one down, or under British and European rules only one card until the players finish. Blackjack is never played with jokers; a standard deck or several decks shuffled together is used. Regional names such as Jamaican blackjack usually describe a set of house rules rather than a different game, so the rules printed at the table are what matter.
Quick answers
What happens when dealer and player both have blackjack?
The hand is a push: neither side wins, and the player's stake is returned in full.
How much does basic strategy lower the house edge?
Following the chart of best plays for every hand against every dealer card brings the house edge down to around half a percent.
When should a blackjack player double down?
Doubling on eleven is right against most dealer cards, and doubling on ten makes sense when the dealer shows a card lower than ten.
Are blackjack cards dealt face up or face down?
House rules decide: many shoe games show players' cards face up, while the dealer takes one card up and one down, or a single card until players finish.