We posted back in May about the My First Revit Plug-in Series. This is a great way for all of you non-programmer types to get your feet wet (and I mean SOAKED) in the Revit API. Now they have added VB.net samples to help lower the bar even further. The explanations in the lessons are still written for C#, but now depending on your language preference you can now follow along in VB.Net.
And if you are so inclined, a little event called Autodesk University is going on right now in a quite corner of Nevada. If you were not able to make it out there this week, starting today is AU Virtual. There are a number of courses related to coding in the Revit API. Check out the archive as well, which includes an Introduction to the Revit API from AU 2010.