Ok got my files uploaded but now what do I link to? I found the readme a bit un-simplistic sorry

This part baffles me
Place the links from one of the flag files somewhere on your web page
This is what I have tryed (laugh as loud as you want )
Setting up a single text link called "translate" on my home page and linking to the following:
/lang/es<?php echo $_SERVER[

Sad I know but hey I know nothing about this stuff
PS: Not sure if it makes much difference by my site is in PHP.