Visual Studio -- How To Test Simple Vb.net Code

I'm going thru an asp.net 4 book, and I'm at a part about classes and their properties and functions. But up to now, all the examples involve a web_site, with controls, code_behind files, CSS, etc. But, I get to places where I don't understand the examples, so I look out on the web for other resources. For example, I found the code below to demonstrate the "ToString" function. My problem is, I'm not sure know how to test a little piece of code like this. Can't I just open up an application or project or something, paste this in and run it?

Module Module1
Class Perl
Dim _a As Integer
Dim _b As Integer
Public Sub New(ByVal a As Integer, ByVal b As Integer)
_a = a
_b = b
End Sub
Public Overrides Function ToString() As String
Return String.Format("[{0}, {1}]", _a, _b)
End Function
End Class
Sub Main()
Dim p As Perl = New Perl(2, 3)
Console.WriteLine(p)
End Sub
End Module