Microsoft have been touting invitations to their Office 2010 WebApps for about a week now, and I was quite disappointed that I didn’t get one, namely because I get Technical Preview invitations to most things but I discovered this little flaw / opening in the system today.
Using your own Windows Live ID sign into login.live.com and then access SkyDrive using the link in the More menu. (PS: This will work with any account registered as a Windows Live ID, contrary to what other reports claim Ã¢â‚¬â€œ I used my @baby-green.co.uk email address and it worked just fine).
Once you logged into SkyDrive upload a Word, Excel or PowerPoint document.
Once you have the document uploaded you’ll find a notification waiting for you asking you to join Office WebApps Technical Preview.
Just remember that during Technical Preview, only PowerPoint and Excel have editing capability. Word is view only and OneNote is currently unavailable.