The Guide shows you Step-by-Step How to Install MongoDB NoSQL Database for Fedora 18 Xfce Desktop.
Finally, the post’s Content is Expressly Reduced to Give Focus to the Essentials Instructions and Commands.

Open Terminal Window
(Press “Enter” to Execute Commands):SetUp Yum Repo for Latest MongoDB Installation:
MongoDB Yum Repo SetupInstalling the MongoDB Database for Fedora 18
sudo yum install mongo-10gen mongo-10gen-server
Starting the MongoDB Server
service mongod start
To Enable Start at Boot:
chkconfig mongod on
To Stop MongoDB Server:
service mongod stop
To Restart MongoDB Server:
service mongod restart
MongoDB Database Getting-Started Guide.