Brushing up: Harry Potter and the Half Blood Prince- the Essential Re-re-re-read

Obviously with the movie on the way, re-reads are a crucial must-do for any Harry Potter fan.
A serving of Quidditch, a dose of Felix Felicis, a vial of memories and the good ol' cauldron of mystery and adventure... ahh, Harry Potter and the Half Blood Prince.
Now, shhh..... I'm trying to read here!