Did a search on the web..

I found a site where you can actually download a DotA 6v6 map that is updated to the latest 6.59D.

http://www.6v6dota.com/

I also looked through some of the videos on youtube.
Think that it's about time that I actually video some of my pub games to show how to play each hero.
Some of the videos are nice, but it can be better.
Among the videos on youtube only a handful are worth seeing.