Tip of the week: Google Books search function.
Pricelessly useful for:
1) Searching for key terms that might not be in the glossary.
2) Refinding that quote/scene/description you forgot to write the page number for.
3) Finding specific terms or evidence (looking for examples of similes in a particular novel? Search Google Books’ electronic copy of the novel for ‘ like ‘ and you’re bound to pinpoint a few).
Just go to http://books.google.com/?hl=EN, search for the book or topic you want, click into the right book and scroll down to the search box on the left hand side of the page. Even if you can’t read the whole book, the ‘snippet view’ will give you enough info to be able to locate crucial bits for your essay without having to trawl through the entire thing. Once you’ve sourced the page it’s on, you can easily look it up/reference it. Easy!