Recommendation for a good entry level text book

Hi all

 Many moons ago I studied Engineering at the University of Bath, and obviously studied mechanics as part of that, though I was never any good at it - witness the fact that I am a large scale IT systems architect now!  For various reasons associated with a personal project, I now need to dust off my less that perfect mechanics abilities to be able to do some basic calculations.  For instance, the first "system" I need to calculate around is basically two bell cranks connected by a long (very long!) rod.  Could anyone point me at a good entry level text that would let me get back up to speed with basic mechanics?  Prefereably one I can buy second hand from eBay or the like.

Thanks in advance

Stephen