Single post content not shown on single.php

Hi, I’m learning how to make wp templates. I’ve found a great tutorial at themeshaper.com (by the way, the better tutorial for beginners I ever found).

At this point, my file is like this:

[Code moderated as per the Forum Rules. Please use the pastebin]

What is wrong? Because the content is not being displayed on the page. It displays all the other things (title, info, tags…).