We at IE8Blog love resources. With IE8 the Microsoft folks produced an overwhelming amount of information for the developer and IT Professional. From the looks of IE9 the level of information is going to be even greater. There are hours of video, blog articles, keynotes, etc… We will update the list as time passes so enjoy and start your studies now. Before you know IE9 will be on your desktop as a released product.
Internet Explorer 9: Platforms Demos <- Get a copy of the preview and run the demos
http://ie.microsoft.com/testdrive/
Mix10:IE9 Keynote Day 2 with Dean Hachamovitch. IE9 Preview Demos
http://live.visitmix.com/MIX10/Sessions/KEY02
Mix10: In-Depth Look at Internet Explorer 9
http://live.visitmix.com/MIX10/Sessions/CL28
Mix10: Advanced Web Debugging with Fiddler. Eric Lawrence
http://live.visitmix.com/MIX10/Sessions/FT50
Mix10: The Tale of JavaScript. I Mean ECMAScript. Douglas Crockford
http://live.visitmix.com/MIX10/Sessions/EX39
Mix10: How jQuery Makes Hard Things Simple
http://live.visitmix.com/MIX10/Sessions/EX36
Mix10: Internet Explorer Developer Tools. John Seitel
http://live.visitmix.com/MIX10/Sessions/FT51
Mix10: HTML5: Cross-Browser Best Practices
http://live.visitmix.com/MIX10/Sessions/CL27
Mix10: HTML5: High Performance Best Practices for Web Sites
http://live.visitmix.com/MIX10/Sessions/CL29
SVG: The Past, Present and Future of Vector Graphics for the Web
http://live.visitmix.com/MIX10/Sessions/EX30
IEBLOG: HTML5, Hardware Accelerated: First IE9 Platform Preview Available for Developers
IEBLOG: More Standards Documentation Available
http://blogs.msdn.com/ie/archive/2010/03/17/more-standards-documentation-available.aspx
IEBLOG: The New Javascript Engine in Internet Explorer 9
http://blogs.msdn.com/ie/archive/2010/03/18/the-new-javascript-engine-in-internet-explorer-9.aspx
IEBLOG: SVG in IE 9 Roadmap
http://blogs.msdn.com/ie/archive/2010/03/18/svg-in-ie9-roadmap.aspx
IEBLOG: The CSS Corder: About CSS Corners
http://blogs.msdn.com/ie/archive/2010/03/19/the-css-corner-about-css-corners.aspx
IEBLOG: The Internet Explorer Testcenter Welcome page: Clarification & Corrections
IEBLOG: Introducing the IE9 Developer Platform Preview
http://channel9.msdn.com/posts/Charles/Introducing-the-IE9-Developer-Platform-Preview/
IEBLOG: IE 9 and SVG – Past, Present a…of Vector Graphics for the Web
CHANNEL9: IE9 at MIX10
http://channel9.msdn.com/posts/Charles/Internet-Explorer-9-at-MIX10/
CHANNEL9: First look at the new JS Engine
http://channel9.msdn.com/posts/Charles/IE-9-First-look-at-the-new-JS-Engine/
CHANNEL9: IE 9 – Surf on Metal with GPU Powered HTML5
http://channel9.msdn.com/posts/Charles/In-your-hands-IE-9-Surfing-on-Metal-GPU-Powered-HTML5/
CHANNEL9: IE 9 Performance Pipeline Overview
CHANNEL9: IE 9: Surfing on the GPU with D2D
http://channel9.msdn.com/posts/Charles/IE-9-Surfing-on-the-GPU-with-D2D/
CHANNEL9: IE 9: Standards and Interoperability
http://channel9.msdn.com/posts/Charles/IE-9-Standards-and-Interoperability/
What an odd problem with MSDN Subscriptions download site!
After I got my MSDN subscriptioin, I immediately had some problems loading the File Transfer Manager activex control from [https://msdn.microsoft.com/en-us/subscriptions/securedownloads/default.aspx]. If I click on any product from the menu on the left, and on the link to download an item, I get what appears to be a common VBscript Warning.
VBScript: Microsoft File Transfer Manager
=====================================
There was an error launching File Transfer Manager.
If you are running Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1, this installation may have been blocked. If the gold IE Information Bar is Present above, please click the bar and select the option to “Install ActiveX”.
For additional assistance, please visit the web site https://transfer.ds.microsoft.com, or contact your help provider.
=====================================
So, it looks like I have some IE Settings preventing me of downloading the activeX control FTM uses to get the download manager window. I have another computer and this works just fine. I can see that With the vbscript dialog warning, you should also get a Yellow Bar security warning which allow the user to download the FTM ActiveX control, but on this particular windows 7 machine, this is not happening.
I had to do some digging around only to find out that my Windows 7 machine had the FTM GUID blocked (killbit).and therefor preventing the FTM ActiveX control to be instantiated.
I have not idea what may have cause this machine to have added the FTM to the ActiveX Compatibility List in IE, maybe something I did trying to protect my computer 
, I know that I do run a lot of security applications and some development that may have cause me the pain, but happy to say that it was really easy to fix.
The the FTM GUID is: {82774781-8F4E-11D1-AB1C-0000F8773BF0}
Here is what you have to do:
> Set the {82774781-8F4E-11D1-AB1C-0000F8773BF0} compatibility flag to dword:00000000
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{82774781-8F4E-11D1-AB1C-0000F8773BF0}]
“Compatibility Flags”=dword:00000000
OR
> Delete the HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{82774781-8F4E-11D1-AB1C-0000F8773BF0} entry
> You can use the Batch File below to help you quickly make the change
Steps:
> Please cut and paste the code below into notepad and save it as ActivateFTM.cmd or .bat
:: ENABLES FTM ActiveX GUID
REG ADD “HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{82774781-8F4E-11D1-AB1C-0000F8773BF0}” /V “Compatibility Flags” /t REG_DWORD /d 0 /f
> Make sure Internet Explorer is not running (confirm by opening Task Manager and killing any IExplore.exe process)
> Run the ActivateFTM.cmd batch file
> Open the 32 bit Internet Explore application and navigate to the MSDN Subscription/Download page
BTW: IE9 will rule the browser world…I love what Microsoft is doing
Lets start off with a exciting presentation from Mix10, and by the way take the time to watch the entire presentation. You will see some cool stuff we promise. VIDEO: Keynote Day 2
So how cool was that.. Now do not tell your friends about this secret link, http://ie.microsoft.com/testdrive. You to can get a copy of the preview version of IE9 from the demos in the video and even run the same examples on your own system side-by-side with your current version of Internet Explorer.
We must warn you the preview is not going to be what you expect with respect to toolbars so please read TestDrive FAQ before you start thinking that there is something wrong.
There is one other very important note, if you are on Windows XP you will be very disappointed. Windows XP is not a supported operating system and from the looks of it IE9 is not even on the radar for Windows XP support. Sorry but it is time to move on and get Windows 7 up and running.
Now do not be afraid, just install the package. The Preview is going to run in a side-by-side, standalone, not going to take over your system, force you to reboot, etc… Now I have to say this is cool as well. Wait a second that has never happened in the history of Internet Explorer. If you read this twice it is not a typo, IE9 will install as a stand-alone package and yes you can run IE9 and IE8 at the same time.
Wait a second how in the world can Internet Explorer be cool. If you watched the video you know the answer to the question. If you did not watch the video then go back and watch the video.
A couple other notes that bring to the surface.
IE9 loves your video card. That 1GB 64 GPU video adapter can get a work out with IE9. Rendering, rendering, and did we at IE8BLOG.com mention rendering is fast.
Do you have an extra core not being used in your system when surfing, well never fear IE9 has this under utilized resource covered as well. How about IE9 compile the javascript code from the web pages you are loading on the fly on one of the processors in your quad-core HP that you purchased from Best Buy.
CSS standards, well this is a never ending story. Great news as well. Write one set of CSS and run that CSS on IE, FF, Chrome, Safari… Is this cool, you bet no more HACKS.
JSCRIPT performance, IE9 is FAST take a look if you do not believe us. Run the tests your self on our own system, http://ie.microsoft.com/testdrive.
Now we are not promoting the installation of Firefox, Chrome, or Safari if you do not have them installed, remember you can compare the current version of IE you have installed against the side-by-side install of the IE9 preview. So, please do clutter up your system with other browsers unless you are a developer building multiple browser compatible web sites.
So get your preview of IE9 installed, use it, play around, load your favorite sites. If something does not work then report it via the Report Issue menu option.
If you are a Firefox Firebug person you need to load the Developer Tools from the menu. Even if you an IT Pro this tool is for you as well. You can now effectively show basic performance data from an end users machine to your developer via the Network tab.
Okay after you are done with the first video and tinkering with the preview dive into the a deeper look into IE9 with the following video from Mix10. VIDEO: In-Depth Look at Internet Explorer 9
Stay tuned for more, IE9 is going to really heat things up and we can not wait to see the public beta release.