So my landlord's wife has bought a little home lifting setup and put in the garage, and says I can use it whenever I like. Has a barbell, a bench, a chin-up bar etc. So I might as well do some lifting, for the first time ever. What's a good routine to start? I'm 170 pounds and just over six feet tall, so quite lean. I'm not looking to put on lots of mass, just improve my upper-body strength and add some definition/lean muscle to my arms and chest. I'm not a gym guy at all, never lifted and have little idea of what would be a good start for an nice routine, preferably aimed at improving core strength. It's more about adding strength than aesthetics. Any help is appreciated. Thanks guys.