Umbraco 7 is next version of widely used open source CMS. It has new underlying architecture that is powerful and flexible enough for you to use and modify to your CMS specification.
Umraco 7 CMS delivers multi-language website support as well as powerful collaboration platform for any environment be it internet, intranet or extranet. One of the advantages of Umbraco 7 is tight integration with .NET Framework. As a result, CMS users can utilize .NET Controls as well as ASP.NET MVC capabilities.
Umbraco 7 utilizes Microsoft's Razor syntax so that startup cost for anyone familiar with Razor is minimal that makes adaption of Umbraco 7 easy. More importantly, there is a way to publish packages with Umbraco that can be used by others in the Packages are. You can always learn this capability by looking at about creating macros.
Finally, if you feel lost with Umbraco 7, you can always find out how to get help