perl server

hello everyone, first of i want to say im a beginner, if there is a beginner-oriented tutorial would appreciate it
i would like to run a perl server with nginx and fcgiwrap

followed this tutorial among others
https://www.linode.com/docs/websites/nginx/nginx-and-perlfastcgi-on-ubuntu-10-04-lts-lucid

i have installed nginx and fcgiwrap packages
i have put all the stuff in the right place,

used the UNIX Sockets Configuration Example

one thing i dont understand is how the server_name works

reading nginx help on server_name
http://nginx.org/en/docs/http/server_names.html
is kinda overwhelming

isnt there an easier way to test a perl example on localhost
thanks in advance