Okay so I already got the spellbook but I cant find the way out. I have been searching for days and I dont find anything! Also, at the place where the troll is laying dead there is a little house thing with a door, but I cant get in the door. It doesnt ever let me open it, and I tried casting all my spells at it. When I casted the diffendo spell at it, it showed one of those curtains with the scissors coming down, but it still didnt let me in the door. Please someone help!

is this the first troll in the challenge or the second? if it's the first then i think behind the troll, on the edge of the garden there is a knocked over tree ( or u have to knock it over) that you cross. this takes u to the next bit. if it is the second troll, kill the horklumps over on the cliff bit and crawl thru the space. ( u kill them by doing flipendo then diffindo) :-) i'm trying to make kharma happen here by helping ppl so that someone will help me with incendio!!! lol.