So it's time to learn yet more stuff, to empty out the old muck (Lingo, Aldus FreeHand, Ventura, etcetera) and fill it with the Latest Goodness.
And here's where I learn my stuff from:
HTML5: Well, there's a whole main menu of hot topics right here on this site. But for learning, I have Dived into HTML5 by Mark Pilgrim. A good, clean, informative...¦ and quirky read. And you can buy the book here (don't be swayed by the single damning review, the US site has lots more optimism.
CSS3: CSS3.info. As the title blurb says "All you need to know about CSS3". And with sites like this, who needs books? Eh? All the exciting bits are in the CSS3 Previews section, showing what can be done with CSS3. Or rather, what can be done in modern browsers :)