f you decide you would rather have a later version of Nginx than the one aptitude provides, then please refer to the sister article (link on the way) which will take you through the process of installing Nginx from source.
Install and Dependencies
Installing Nginx is incredibly simple as it involves one command:
sudo aptitude install nginx
This will install any and all dependencies that Nginx requires, such as libpcre.
Start
One odd thing is that Nginx is not started automatically:
sudo /etc/init.d/nginx start
Done.
Navigate
Now simply navigate to your IP address, and you will see the wonderfully simple welcome screen:

Init scripts
As you would imagine when installing an application with the aptitude package manager, all init scripts have been created and added to the relevant run levels.
Controlling nginx is done with these commands:
sudo /etc/init.d/nginx start
...
sudo /etc/init.d/nginx stop
...
sudo /etc/init.d/nginx restart
That’s it.