A few weeks ago, Peter J Farrell from the Mach-II team asked if I would contribute the Mach-II Primer to the project's main Wiki. It took me about 30 seconds to agree.
Brian FitzGerald undertook the task of moving the existing entries to the Mach-II Wiki. You can now find the Primer at http://trac.mach-ii.com/wiki/Quickstart.
In the relatively near future, I will be updating the Primer for Mach-II 1.6 and adding any new entries on the Wiki.
The only thing I'm not 100% on is how to handle comments and questions on new posts. If there's no way to handle it on the wiki, I'll add placeholder posts here and link back from the wiki entries.