Creating a class library in VS2013 that can be referenced by a VB6 application and newer applications

I need to create a class library in VS2013 that can be referenced by a VB6 application and newer applications. I heard something about
COM Interop but have no idea where to start. I am assuming I would develop a class library in VS2013 and then package the assembly for COM. Any good sample projects on this out there?

Hello,
>> Any good sample projects on this out there?
Not suer if you are using C# as the develop language, if it is, i think you would find a lot of articles about this topic with your favorite search engine, here are some related links:
COM Interop Part 1: C# Client Tutorial
COM Interop Part 2: C# Server Tutorial
Regards.
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