[Hagrid] arrives, asking [Harry] not to speak [Voldemort]'s name and updating [Harry] and [Ron] about [Grawp]. As he walks away, [Harry] and [Ron] realize that nobody will be taking [N.E.W.T.]-level [Care of Magical Creatures].
Late to the Welcoming Feast
[Harry] arrives in the [Great Hall], where [Hermione] siphons the blood off his face; they and [Ron] then discuss things that have happened since they last saw each other.
[Dumbledore] makes his usual Welcoming Feast announcements, about banned items and safety, and also a new development - [Snape] will be taking over as [Defence Against the Dark Arts] professor, while [Slughorn] teaches [Potions].
[Harry] and [Ron] hang back while the [Great Hall] empties, discussing [Draco Malfoy]'s boasts on the train.
Chatper 9 - "The Half-Blood Prince" - In which Gryffindors get course schedules and discuss Malfoy and Quidditch trials, then go to their first day of classes. In Defence Against the Dark Arts Harry fights back against Snape's attempt to jinx him and gets detention, during break he hears his first lesson with Dumbledore will be Saturday, and in Potions Harry wins the Felix Felicis thanks to a perfect potion he brewed with the instructions written in his book by the Half-Blood Prince.
[Harry] and [Ron] tell [Hermione] about [Draco Malfoy]'s conversation on the train, [Hermione] confiscates a [Fanged Frisbee] (which [Ron] takes, much to [Lavender Brown]'s amusement]), and they discuss their new schedules.
Business at Breakfast
[Professor McGonagall] hands out course schedules to the sixth years. She compliments [Neville], much to his surprise, and [Harry] learns he will be able to take [Potions].
[Katie Bell] compliments [Harry] on becoming the [Quidditch captain] and they disccuss tryouts.
Snape's Defence Against the Dark Arts Class
In his first class as [Defence Against the Dark Arts] professor, [Snape] introduces sixth-years to the [N.E.W.T.]-level course, and [nonverbal spells] in particular.
[Ron] and [Harry] practice [nonverbal] [Shield Charms] in their first [Defence Against the Dark Arts] class, until [Snape] tries to jinx [Harry] and he talks back - earning his first [detention] of the year.