The tutorial is the initial experience designed to introduce players to Hearthstone. It is composed of six 'missions', and must be completed before the player can play Hearthstone properly. The tutorial comprises a kind of introductory game mode with reduced gameplay and helpful instructions. The tutorial can only be played once.
Each 'mission' takes the form of a battle against a special enemy hero. The player controls Jaina, and the story follows her as she learns the basics of Hearthstone. Compared to normal play the tutorial is heavily directed, with the player's actions limited to a few possibilities. Basic game elements are added with each mission, slowly introducing the basics with helpful tips and instructions.
Each mission also features substantial dialogue between Jaina and her opponent. These opponents are unlike regular heroes, with unique abilities, cards and soundbites, and cannot be selected by players in the rest of the game. All of these characters are however available to collect as minion cards, with the exception of Hemet Nesingwary.
The ability to replay the tutorial has been requested by some players, as has the introduction of a range of tutorials designed to teach more advanced aspects of gameplay. Blizzard have indicated that they may be interested in these possibilities, although no plans have yet been announced.
 Hero analysis
Hogger is the first enemy hero you face in the tutorial. He has two unique minions, as well as one unique spell.
Millhouse Manastorm is the second enemy hero you face. Unlike most enemy heroes, he has no unique minions or spells. Like Cho and Mukla, he has no hero power. Instead, he has most of the spells and minions you have. This encounter is intended to teach you about mana usage.
King Mukla is the third enemy hero you face. While he doesn't have any hero power, he has an extra unique minion. Like the rest, he has two unique minions, but has one huge powerful minion that basically stands to teach players about strategy. Attack the big guy with no taunt, or kill the enemy hero?
Lorewalker Cho is the fourth enemy hero you face. Like Mukla, he has no hero power. However, he gains a powerful spell. He has two unique minions, and a powerful spell called Transcendence. It basically makes him immune to damage until you kill all the minions of the board, designed to teach you how to trade minions effectively.
Hemet Nesingwary is the fifth enemy hero you face, featuring a unique hero ability that mimics the mage's Fireblast. Like Hogger, he has two unique minions, and one unique spell.
Illidan Stormrage is the sixth, and final tutorial enemy hero. He has two unique minions, but no unique spell. Instead, he comes equipped with three unique weapons, as well as a powerful hero power. He's supposed to teach you about powerful minions with low mana cost having major downsides.