Hi,
I am new in MODx so the first thing what I did after installation was to head into the documentation.
I read fast the documentation then I wanted to go through the tutorial over there. How to setup blog/news site. It took me hours and I could not get it working because many snippets names had changed. I tried to read documentation but after searching in this forum I found out new names. I suggest reviewing this tutorial.
Further more it took me 1.5 days before I notice that you have also WIKI which is (IMHO) better than documentation on the site because HowTo over there really rocks for new comers. Why not putting
http://wiki.modxcms.com/ as documentation and move existing introduction texts and tutorial over there?