Thansk for your detailed advices.

As I understand correctly, there is pretty much no limitation using DNN and creating modules.  The only difference is that as I start using DNN I will have to switch to modular and controll based development rather then page based, what is better practice anyways.  Also, looks like I do not have to do muhc extra coding since I can use DNN module starter kit and all I will need to do is to start creating functionality in module based development practice. So far I have been using page based web site development so I guess I have to change practice what I do not mind though.

I was just wondering if I can use web site based classes and libraries that I can access through the modules or each module is secluded and has to use local resources only.

Thanks

You can use any other libraries or resources you would in building a normal site. (there may be rare exceptions, ect)

If you've ever made a user control for use on page, essentially the same thing. You can use the same libraries and other resources,