In my case that was much uglier, and I had to fix it to read the page.
The page is hard to read on Mac using unmodified Firefox.
But I'd highly suggest learning how to administer a Linux installation from the command line locally before you create a VPS and open yourself up to be hacked as you try to learn how to do everything.
It's very nicely written and explains things well, but it doesn't so much teach nginx as it does point out all the contradictory and unexpected behaviors. That doesn't look fun to learn (or work with) at all.
Edit: I just looked in to agentzh's other project OpenResty, and I take everything back. It may be difficult, but it's extremely powerful, and seemingly worth dealing with the 'gotchas'.