Exactly what is poker?

Why is the Fundamental Theory of Poker important?

In what situations does a player gain even if he bets and loses?

What is bluffing? Why is it important for a poker player to be able to bluff?

What is the difference between a full bluff and a semi-bluff? In what situation is the semi-bluff appropriate?

What is game theory? How is it used in bluffing?

What is meant by the psychology of poker?