If you're looking to get going see the Install guide, then peruse the commands. After that maybe watch the project for updates on GitHub and join the MSM community.
If there is something in this documentation which you thinks needs changing, now you can change it by forking gh-pages and sending a pull request.
Equally if there is something which you do not understand post an issue and I will help you out and update the documentation to better prevent confusion in the future.