Malcolm Gladwell’s book called Outliers says that to become an expert at something, you must put in 10,000 hours. I know that you don’t have that much time to become an expert (although you will eventually) on HTML5 and IE9, so I wrote this post to get you up-to-speed quickly. Although not intended to be a comprehensive learning plan, it can get you going in the right direction.
Books on HTML5 & CSS3
Links for Internet Explorer 9
There has been a lot of good material covering what is new in IE9. I recommend:
I highly recommend going back through the archive of the IE Blog. Not only does it cover a wide variety of topics, but also many times will talk about why the product team has made decisions that they have. If you really want to get into some deep, technical information, then subscribe to Eric Law’s IE Internals blog. Also, go to the HTML5 Labs to see how Microsoft prototypes early and unstable specs to get feedback on them.
Just Do It
You can read and review all the material above and that will provide a good baseline for your knowledge, but it still does not create a true comprehension of the material. I suggest that you learn by doing with two ideas.
One, you should give yourself a simple project to work on such as taking a website (or a sample site) and implement site pinning, jump lists, thumbnail toolbars and notifications.
Two, you should become familiar with the F12 Developer Tools that come with IE9. Yep, just press F12. You can look at IE Test Drive site or Beauty of the Web demos and decompose them to see how they were built. You can even manipulate and inspect them with the F12 tools.
Although not exhaustively comprehensive, this should give you a good start.