Due to its broad possibilities you might have some questions about MetaModels not only when you have just started but also when you already used MetaModels for a while. For all those questions we have a special "MetaModels" heading in the Contao forum.
As a first approach and if you are unsure how to frame your questions and which informations are actually needed, refer to the forum postings to get some hints. You can subscribe to a post to automatically get the latest news about MM news, updates in the manual or known bugs.
Besides the forum you can also get informations via Twitter, Facebook, Mumble, Github oder dem IRC.