As we've mentioned elsewhere on our site, it's important for us to pay into the DotNetNuke community by making resources that we find useful available to everyone.  If the following resources save you a little time, then we've done our job.

DotNetNuke Resources

Videos

• Using an ISAPI Filter to Create a RESTful Interface in DotNetNuke (Caution!  Changes to the DNN core required)

How To Documents

• Modifying the DotNetNuke Core to Map Sub-domains to Portal Content (Coming Soon!  It's a work in progress for a feature we decided not to use.  I'll upload it to help others going down this same road.)