Harry Potter and the Half-Blood Prince

I am reading Harry Potter and the Half-Blood Prince. So far I like this book. It is Harry Potters sixth year at Hogwarts and Lord Voldemort has returned to full power. Here is basically what has happened up to where I am at. Cornelius Fudge the minister of magic has been replaced with the former head Auror Rufus Scrimgeour. Professor Snape made an unbreakable vow with Draco Malfoys mother to keep him protected and to help him with the task voldemort has given him. Harry fallows Draco Malfoy into Knockturn Alley and decides that he is up to no good. Horace Slughorn becomes the new potions teacher and Snape gets defense against the dark arts (his most favorite subject). Harry becomes captain of the Gryffindor Quidditch team. Professor Slughorn makes a group called the slug club that is for the relatives of famous witches and wizards and for students that are very good at magic. Harry has to barrow a potions book from the school and the previous owner was the half blood prince. The potions book has short cuts and tips for potion making and spells which allows him to be the best potions maker in his class which makes Hermione very jealous. Katie Bell was cursed. Ron and Hermione are fighting because Ron is going out with Lavender Brown and he is making it public. Harry finds out that Snape has made the unbreakable vow with Malfoy's mom which adds to harry's suspicion. The sixth years get to take apparition lessons after winter break. Oh ya and Dumbledore is giving Harry secret lesions about Voldemort's past and Harry secretly likes Ginny Weasley.