If you’re interested in getting started with HTML5, you will probably appreciate the HTML5 cheat sheet posted by Smashing Magazine. Even though HTML5 won’t be completely supported until 2022 it looks like it’s already on it’s way to becoming popular. SmashingMagazine promised to update this cheat sheet as new changes

If you want to learn HTML5, or are already using it, having a cheat sheet like the one on will be very useful. It’s designed as a grid with HTML tags and their related attributes supported by HTML 5. You can print it or download through Scribd. HTML5 Visual Cheat