I would like to learn a programming language. I have no prior experience in programing. What would you suggest for a beginner?

Don't know about C++ but Javascript is perfect for beginners and it allows you to build games with Unity.

C# is an excellent first language. It's easy to learn and use, but if you want, you can also write more powerful programs as you grow. You can get the Visual C# Express compiler for free from Microsoft:

http://www.microsoft.com/express/Downloads/

There's plenty to read, and tutorials here:

http://msdn.microsoft.com/en-us/vcsharp/aa336766