Here’s a neat little iPhone app for all you typography nerds: Typography Manual is a pocket reference book for everything you could wish to remember about fonts and typefaces.
Better still, it’s more than a reference book. It’s a toolbox as well, with a font size calculator, em calculator, conversion tables for switching inches and millimetres into points and picas, and a list of HTML character codes. If none of those things mean a thing to you, don’t buy Typography Manual. But if they do, you might find it hard to resist. It’s only five bucks.
My favorite review is the last one on the testimonials page: “One of only a handful of programs I’ve seen on the iPhone that hyphenate properly.” (And yes, I know I’m using straight quote marks there. I know, I know.)