Pierrick Calvez with, just maybe, a bunch of typographic advice that you've heard before. But this is presented very lovingly and humorously.
Repeating the basics with typography feels important in the same way repeating the basics of performance does. Gzip your stuff. Make your line length readable. Set far expires headers. Make sure you have hierarchy. Optimize your images. Align left.
Let's repeat this stuff until people actually do it.