In the last days, I found three good links for Windows Server 2012 Essentials administrators.
First is a detailed step-by-step instruction how to implement the direct access with the Server 2012 Essentials. I suggest everyone who wants to implement this functionality to look at this post.
The second link is a Windows app “My Server”, which makes locally available many server management functionalities. A good app, but it is working only with the Essentials server.
The last one is a page with great tools for managing Office 365. There are third party tools, but they can be also useful for administrating Office 365.