If you remove the back of the phone (it should be obvious how to do this) the model number will be shown underneath the battery. Then go to the Nokia website (http://www.nokia.co.uk/support/product-suppo
rt/services)
and type in the model number in the Search box. There will then be an option to download user manual.
Thanks everybody. The photograph posted by Ratter15 is identical to the one I've been given. It is slightly more up to date than the one I'm currently using & will suit me ideally.