Most people have some sort of library in their house — it doesn't have to be a wood-panelled room lined floor to ceiling with oak shelves; a library is simply a collection of books. And whether books are shelved in a room fit for a king or stacked haphazardly in a single pine bookcase, they must be cleaned and cared for. Keep your favourite hardcover and softcover tomes in best-selling shape and you'll have them forever. Here's how: