The Autodesk Developer Network (ADN) has recently released a self-paced guide for Inventor API development called “My First Plug-in”. The guide is designed for those of you that are new to programming and doesn’t assume any previous programming experience. Most of the content discusses basic programming concepts and then lets you put them into practice utilizing Inventor’s API (Application Programming Interface) to create a simple program to control the display of occurrences within an assembly.
Even for those of you that are experienced Inventor API developers, if you’ve been using VBA this will serve as a good introduction to VB.Net. It uses Visual Basic Express, which is available as a free download from Microsoft.
Clicking the picture below will take you to the “My First Plug-In Training” page for Inventor. There is also a similar tutorial for Revit.