Unofficial Sphero SDK for Windows Phone 8 and Windows 8
Basics (in french) :
http://blog.soat.fr/2014/02/sdk-sphero-part-1-introduction-2/
Sensors (in french) :
http://blog.soat.fr/2014/02/sdk-sphero-part-2-les-capteurs/
Macros (in french) :
http://blog.soat.fr/2014/03/sdk-sphero-part-3-les-macros/