1. The Metro Internet Explorer app featured in this build of Windows 8 has an InPrivate mode that can be activated by right-clicking in the program and right-clicking the New Tab button and clicking the InPrivate button.
2. If you have UAC set to the highest level, you won't be able to activate Windows, add a new user and reset or refresh your PC in the Metro Control Panel, it will state you must be logged in as an administrator to use the Reset and Refresh your PC buttons, even if you are already logged in as an administrator.
3. The Store app closes after a couple of seconds if you are on the Desktop or another Metro app.