GO TO THE LINK, U HAVE EVERYTHING U WANT THERE.
MICHEAL SMITH

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Before there were Web parts, DotNetNuke created installable private assemblies nicknamed modules to encapsulate the functionality desired within a modular environment. It doesn't take much experience developing modules for DotNetNuke before you start asking the age-old questions: I know that it's powerful, but where do I start? I know this is handled in DNN, but how? How do I structure the module and create the installable package? At this point you are most likely starting to think instinctively about how to utilize a combination of existing tools and reusable code or templates to streamline development time.