Our Umbraco

Restore the database to SQL Server 2012 (looking into a 2008 option!) and update the connection string (umbracoDbDSN) in OurUmbraco.Site/web.config

Make sure to allow NuGet Package Restore in VS (Tools > Options > Package Manager).

To sync your fork with this original one, you'll have to add the upstream url once: git remote add upstream git://github.com/umbraco/OurUmbraco.git

And then each time you want to get the changes: git fetch upstream

.. Yes, this is a scary command line operation, don't you love it?! :-D