If you like lifting things all day, hour after hour, and don't like the tedium of actually thinking a whole lot, you might want to give this book a quick glance. It's the best book for learning the jargon of the grip and how some grip equipment is used. It's quite good, in fact.
If you have questions about film and video stage equipment, this is the second best reference; the first would be the catalogs. It's well organized and readable with good illustrations. I wish I'd read it about ten years earlier.
I don't actually think grips don't like thinking. I'm just bitter about the time I've spent sort of being a grip.