When you came face to face with Prof. Quirrel, he releases some gytrashes and realeases a BlueRing around him and the Mirror of Erised. To get rid of the Gytrashes, do not first collect one Chocolate Frog first. Charge up with Lumos spell and point to Gytrashes. If half of their life was taken, Quirell will turn off the shield and he's casting a spell to add some more Gytrashes. While he's casting the spell, cast him with Charged Flipendo. Do that many times until you finish that part.

Search all of the desks in the classrooms. They contain Beans, Cauldron Cakes, Pumpkin Pasties, Stink Pellets and even Wizard Cards.

If you have used the three frogs in the battle before Voldemort (Gytrash), do not worry. You can get these again. Save the game in a safe area in the middle of the battle. Then, exit the game and reload it. The frogs will be there again.

The Devil's Snare is exactly like the Tentecula, but much easier. Cut off his arms and his head then shoot Incendio at him. This time do not worry about running back and forth. Stay still and he will not hurt you much.

Go out of the common room and into the main room. Turn right and crawl under the bookshelf. This area is also in the Chamber of Secrets.

This cloak is not too helpful. Prefects will still catch you. The most you can do is not touch the Prefects. Filch can usually find you, even if you do not touch him. If you do get caught, even without the cloak, you will not get House Points taken away from you.

There are mean looking statues of gargoyles all over the teachers' quests. Light Lumos in front of them and they will reveal a hidden path.