In this Visual Studio magazine article, my colleague Max Zilberman shares top 10 tips for developers to build Windows Phone apps in a right way.

1. Embrace Metro
2. Leave Some Space
3. Respect Margins
4. Get Controls out of the Way
5. Make Navigation Predictable
6. Learn How to Pin Tiles
7. Limit Results on Map Control to What the User Can See on the Viewport
8. Tombstoning Should Be Transparent
9. Properly Manage Network Failures
10. Avoid UI Thread Blocking

Read the full article here.

To get started, developers can download free tools including Windows Phone SDK.