Today is an exciting day that marks the release of Windows 8 ’s first upgrade – Windows 8.1. The free software update for existing Windows 8 users can be picked up from the Windows Store or purchased from your favorite retailer, if you are running an older version of the operating system (for more details on getting the update, click here ).

If you want to know the basics and changes that come with the update, you can check out our quick start guide that addresses many of the changes brought to the Start screen and legacy desktop.

If you still have more questions that remain after checking out our quick start guide, you can always chat up the Windows team and ask them your questions. At 1:30 PM EST, Microsoft will be holding a Reddit AMA (Ask Me Anything) session until 3 PM EST. You can feel free to step in and get your questions answered by Microsoft personnel.

You can also hit up Microsoft’s official Windows Twitter account from 3 PM to 4 PM, during which, a live chat will be held under the hashtag, “#Winchat”.