[MongoDB]: Useful books & Interactive session urls
MongoDB Reference Cards
http://info.mongodb.com/rs/mongodb/images/mongodb_qrc_booklet.pdf
The Little MongoDB Book (The ultimate Intro to MongoDB)
http://openmymind.net/mongodb.pdf
FYI … very useful MongoDB & Geospace Index Interactive sessions below.
http://mongly.openmymind.net/tutorial/index
http://mongly.openmymind.net/geo/index