New Features in ASP.NET 2015 or ASP.NET 5

http://www.c-sharpcorner.com/Blogs/48460/new-features-in-Asp-Net-2015-or-Asp-Net-5.aspx

SQLBolt, interactive lessons to learn SQL in browser

http://sqlbolt.com/
Welcome to SQLBolt, a series of interactive lessons and exercises designed to help you quickly learn SQL right in your browser

Why PostgreSQL is way, way better than MS SQL Server

http://www.pg-versus-ms.com/

How good is your C#?

http://volatileread.com/Wiki?id=1073

How to solve problem "Unable to load the specified metadata resource." in Entity Framework?

Replace EDMX connection metadata part to
connectionString="metadata=res://*/;