Welcome to Softwaresedge.com a DotNetNuke community support site. I hope you find something useful here and it helps you achieve you goals.
Check out the free module directory, I maintain the list as I have time. Sometimes things change and I don't know about it feel free to leave me a comment on anything and I will try to correct it.
You could also check out my blog. In an effort to give back to the DNN community I post related ramblings.