I presented on Minecraft in Geography at the High Schools that Work Conference in Nashville, Tennessee on July 18, 2014. Many of the resources mentioned are linked on my Minecraft page. The software discussed includes MinecraftEdu, Spritecraft, and MCEdit. The presentation (with all those detailed instructions for you or your technophile students) is linked below in Acrobat (.pdf) format. Contact me (Twitter, Skype, or email) if you need help, have questions, or want to share success stories.
Minecraft in Geography Shared Version — .pdf (Adobe Acrobat)