I changed to 1024x768 to try a few things only to discover afterward that I cannot reduce back to 800x600.
That is annoying, I have the same on my netbook with 1024x600 LCD that can do fake 1024x768. I'm currently using quickres2 to allow me to switch back to 1024x600.
http://oette.wordpress.com/quickres2/ The missing start menu is a little weird at first, if you get too lost then you can add a toolbar to the "C:\ProgramData\Microsoft\Windows\Start Menu" directory to the taskbar.
The "charms" menu is a bit annoying to pop up with a trackpad, but I've been using the keyboard shortcuts.
http://www.overclock.net/t/1224031/itw-windows-8-consumer-preview-keyboard-shortcuts Until I found about those and the "charms", I was a bit lost as to find anything like computer management etc. Windows I is the new Ctrl Escape.
I'm not entirely convinced about Windows 8 yet, but I've only got it my netbook so far. I noticed one program that I launch effortlessly with years of muscle memory on Windows 7 & earlier is now quicker using the new app menu. So I think there is definately promise & we are way off release, this is not even an alpha release in terms of final functionality.