For all versions of SQL Server to include SQL Server Express, you can now use Microsoft SQL Server Management Studio to connect to SQL. Please point your Microsoft SQL Server Management Studio to the server URL we provide you at the time of set up.
Download a free Express version of Microsoft SQL Server Management Studio here: https://msdn.microsoft.com/en-us/library/mt238290.aspx
Please make sure you enable TCP/IP protocol otherwise your SQL connection will not take place