Just starting out, believe it or not I LOVED The Idiot's Guide to Zen Living. It certainly does't go as deep as other texts, but it serves as a great introduction and a launching pad into wherever you want to go with it. A modern viewpoint is achieved in Zen and the Art of Motorcycle Maintainance by Robert Pirsig.
Above all else, just BREATHE. Your breath and being completely in the present moment are ultimately both your goal, and also your greatest teachers.