In Pictures: Making the most of Windows 8 - the di...
Knowing when to go Metro
You're best off not trying to replace existing desktop apps with Metro apps, except for ones primarily designed for consumption. Don't expect every single app to turn up in a Metro incarnation -- at least not until Windows users are comfortable enough with Metro to attempt working with more sophisticated apps. One example of a good replacement app would be the Metro Kindle app. It's slightly easier to deal with via a touchscreen device than the legacy/desktop Kindle app, and its power consumption optimization will stand you in better stead if you're taking your Windows 8 machine with you.
In Pictures: Making the most of Windows 8 - the diehard's guide