(Update of May 2017 post)
This free 95 page guide put out by Mobile Ministry is aimed primarily at cross cultural mission workers, but has some useful information and pointers for anyone involved in social media and Christian ministry.
1- Helping Others Find, Friend, and Follow Jesus
2- Developing Your Strategy
3- General Social Media How-To’s
4- Using Facebook & Twitter as a Social Media Primer
5- Instant Messaging/Chat Apps
6- Visual Media-Based Channels
7- Live Video Channels
8- Social Gaming & Gamification
9- Advertise to Boost Reach and Engagement
10- Social Media Security
Version 0.8 of this was released in April. This is version 1.0 but if think you can do some bits better, or if you would like to translate it you can. Content is shared under a creative commons license that gives you permission to take and adapt some or all of it (providing you give credit and share your material under the same license)
Download the guide at http://mobmin.org/social and don’t forget to tell your friends on Facebook, Twitter, Instagram, Pinterest, LinkedIn, WhatsApp, WeChat, or Clash of Clans!