Cheat Sheet!
The good folks over in the MongoDB Developer Community today published a cheat sheet of basic MongoDB operations. Perfect for that MongoDB Hitchhiker looking to get started!
Gorilla Mongonius
Latest Versions
Server: 5.0.1 
Server: 4.4.7
Server: 4.2.15
Server: 4.0.26
Ops Manager: 5.0.0
Ops Manager: 4.4.15
Ops Manager: 4.2.25
Compass: 1.28.1
Connector for BI: 2.14.3
mongosh: 1.0.0
mongocli: 1.19.0
Tools: 100.3.1
Server: 4.4.7
Server: 4.2.15
Server: 4.0.26
Ops Manager: 5.0.0
Ops Manager: 4.4.15
Ops Manager: 4.2.25
Compass: 1.28.1
Connector for BI: 2.14.3
mongosh: 1.0.0
mongocli: 1.19.0
Tools: 100.3.1