Jeff is currently an Alexa Evangelist role for Amazon, and is the author of Migrating to Windows Phone, and several "31 Days..." series on his website covering Windows Phone and Windows 8 development. He also serves as an organizer for the Stir Trek conference.
Be sure to follow Jeff on Social Media
https://twitter.com/jeffblankenburg
http://twitch.tv/jeffblankenburg
http://github.com/jeffblankenburg
Also check out Jeff's Blog!
https://blankenblog.com/