The DevTV videos are one of the best ways for new Revit programmers to start to get their head around things, and they have been updated for Revit 2015. Links:
- DevTV Introduction to Revit 2015 Programming Part 1 – a short video tutorial demonstrating the basic steps to start developing with the Revit .NET API – View online | Download
- DevTV Introduction to Revit 2015 Programming Part 2 – a short video tutorial demonstrating selection and filtering API through a Room Renumbering application – View online | Download
- Revit 2015 API Labs