Harry Potter and the Half-Blood Prince book review

This book is the property of the Half -blood Prince...The suspense would have killed me. Well it didn't kill me, but it killed Dumbledore. Dumbledore did not deserve to be dead. But anyway, this books circles on Harry Potter using a potions book of the Half-Blood prince with turned out to be Severus Snape. Harry uses the spells on the book. He used the Levicorpus spell on Ron and the Sectumsepra spell o his worst nemesis, Draco Malfoy who cornered Dumbledore and helped Snape kill him. This half-blood prince's book also helps/maybe gave him the instructions of what to do in potions.

he book is tells us about the Sixth year of young Harry in the magical school known as Hogwarts School of Witchcraft and Wizardry. The main focus of the story in the book is on the nemesis of the Harry in the past which is Lord Voldemort. This is because of the memories that Dumbledore put into the Pensieve during his lessons with Harry. In the and Snape betrays all and kills Dumbledore which is the saddest part in the story because Dumbledore, one of the strongest wizards of all time, dead?

He was strong till he drank a poisonous liquid in the cave of Lord Voldemort....But my question is, why did Snape need to kill Dumbledore, after everything he did for Snape? You know why, Betrayal. Snape simply betrayed Dumbledore the split second Voldemort ordered him to. It would have taken him years and years to build Dumbledore's trust on him. And betrayal, don't even ask me about it. Snape took a split second to decide the death or perhaps the murder of an old powerful wizard, who was anyway going to die soon.

How I wish Dumbledore enjoyed his last moment in the 3-5 minutes before Snape said the killing curse...