You don't. You don't have to give it Rowley and you can't give it to Rowley. If you're watching a cheat video, I made the same mistake but you can't give it to Rowley.
You have to jump on his dad's car then *very quickly* jump over to hide behind the bush at the left side of the door. When Mr. Jefferson comes out and walks right, quickly click repeatedly on the...
Go to the school, get the game manual from Greg's locker, give the game manual to Greg after he says that he needs to pass the level. After that, he will ask you to return the game to Rowley.
Yes. But you can do this with a minimum of practice using the Easy Mode. When the game opens, don't press start until you press the wizard at upper left.(see the related question)
Get the Twisted Wizard guide from his locker at the school. You will have to chase Manny there, then use the seesaw to toss the round trash can up onto the ledge. The locker combination is on the...