Presentation main idea is to show how easy is to start the development of an Windows Phone 7.1 (Mango) application. Whole presentation will be a walk through of a creation of simple application. The application will be made only for CodeCamp and will be created in 30 - 40 minutes during the presentation. Simple application but covering few main functionalities which are new in Windows Phone Mango. Also mentioning some difficulties that might be experienced while developing for Windows phone.