“Project Management for the Unofficial Project Manager” is a high-level but pretty complete introduction. It has good examples from non-technical projects based on the Project Management Institute’s infamous “Project Management Body of Knowledge” (PMBOK).
Scott Berkun’s “Making Things Happen: Mastering Project Management (Theory in Practice)” details some of the less process-oriented, more “in the trenches” aspects to managing a project.
Steve McConnell’s “Rapid Development: Taming Wild Software Schedules” is more of an encyclopedia of software project management. Published in 1996, it’s now a bit dated, pre-dating Scrum and Agile but all those ideas have been known for a long time.