If it's a book on the camera you need, did it not come with a manual? If not you might be able to get one from somewhere....maybe someone on here has one?
Or it might be possible to download one from the Olympus website.
If you're new to photography generally, there are many books out there, including beginners guides. Plus there must be a lot of stuff on the internet.
It's just a matter of finding what's right for you. Good luck.