move OO tutorial to get-started

.openpublishing.redirection.json

@@ -2164,6 +2164,11 @@
             "redirect_url": "/dotnet/standard/linq/xdocument-class-overview",
             "redirect_document_id": true
         },
+        {
+            "source_path": "docs/csharp/programming-guide/concepts/object-oriented-programming.md",
+            "redirect_url": "/dotnet/csharp/tutorials/intro-to-csharp/object-oriented-programming",
+            "redirect_document_id": true
+        },
         {
             "source_path": "docs/csharp/programming-guide/concepts/linq/xelement-class-overview.md",
             "redirect_url": "/dotnet/standard/linq/xelement-class-overview",

docs/csharp/programming-guide/classes-and-structs/classes.md

@@ -96,7 +96,7 @@ The following example defines a public class that contains an [auto-implemented
 ## See also
 
 - [C# Programming Guide](../index.md)
-- [Object-Oriented Programming](../concepts/object-oriented-programming.md)
+- [Object-Oriented Programming](../../tutorials/intro-to-csharp/object-oriented-programming.md)
 - [Polymorphism](polymorphism.md)
 - [Identifier names](../inside-a-program/identifier-names.md)
 - [Members](members.md)

docs/csharp/programming-guide/concepts/index.md

@@ -19,7 +19,6 @@ This section explains programming concepts in the C# language.
 |[Expression Trees (C#)](./expression-trees/index.md)|Explains how you can use expression trees to enable dynamic modification of executable code.|  
 |[Iterators (C#)](./iterators.md)|Describes iterators, which are used to step through collections and return elements one at a time.|  
 |[Language-Integrated Query (LINQ) (C#)](./linq/index.md)|Discusses the powerful query capabilities in the language syntax of C#, and the model for querying relational databases, XML documents, datasets, and in-memory collections.|  
-|[Object-Oriented Programming (C#)](./object-oriented-programming.md)|Describes common object-oriented concepts, including encapsulation, inheritance, and polymorphism.|  
 |[Reflection (C#)](./reflection.md)|Explains how to use reflection to dynamically create an instance of a type, bind the type to an existing object, or get the type from an existing object and invoke its methods or access its fields and properties.|  
 |[Serialization (C#)](./serialization/index.md)|Describes key concepts in binary, XML, and SOAP serialization.|