Go to Rowley or Greg's room and then you'll find it
Give the guide to Greg and he will continue to help you.
go to the locker in the school that is whiter then all the rest and insert the locker code: 9, 37, 15!
Make sure you have the Twisted Wizards Guide (it's in a school locker), then give it to Greg. He will "enable cheats" then click the wizard. It's still hard, but doable. Don't get frustrated!
You find the scrap of paper in a tree next to the school, then enter the school and find Greg's locker. use the numbers to unlock it and you will get the guide, it will tell you how to set it to easy but Greg automatically puts it to cheats.
I am really not sure how
follow manny
Greg already has Twisted Wizards but he cannot beat it without the Game Guide that is in his locker at school. After you get the address book, go out Manny's window and follow his tracks to Rowley's house. You will chase Manny to the school and get the game guide.
where is the twisted wizard guide in wimpy wonderland
you return the twisted wizards game back to rowly
go to the school and find a white locker the combo. is 9-37-15 there should be a twisted wizard guide in there give it to greg
in the locker at the school
you need to get greg's locker number and then you can find it in his locker.