Ran into the following error during the Google Cloud Platform Bookshelf tutorial:
Error 1 NuGet Package restore failed for project 2-structured-data
Found it in the menu under Tools -> Extensions and Updates -> Updates tab -> Visual Studio Gallery.
Right click on References and choose Manage NuGet Packages. Then search NuGet
You can download the NuGet Package Manager for Visual Studio 2013 from
https://marketplace.visualstudio.com/items?itemName=NuGetTeam.NuGetPackageManagerforVisualStudio2013
and install it on your machine. The version of NuGet Package Manager for Visual Studio 2013 which is available on this download URL is 2.12.0.817.