A quick post as the Exchange 2013 Help (.CHM) files on the Microsoft Download Center have been updated. The offline help files files are convenient if you’re on the road or in a location without internet connection.
You can download the updated files dated January 18th, 2013 for On-Premise and Hybrid deployments of Exchange 2013 here.
On another note, there’s a new Office Visio 2013 stencil for Exchange 2013, including on-premise and hybrid deployments. You can download it here.