Basic CRUD seems like the starting point for just about any db driven web app. Found there wasn't much available for node.js. So here is a first go.
INSTALLATION Get node.js, npm and mongdb
npm install mongoose
npm install jade
npm install express
SETTING UP Start mongodb in the terminal. Navigate to your mongodb install directory which should be something like..
/Users/Username/src/mongodb-osx-x86_64-1.8.3/bin
and run
mongod
There are probably better ways, I don't know them. In another terminal cd into the crud-mongo-express directory and run
node index.js
In a browser go to
http://localhost:3000/posts/