The What’s new for developers in the new Project desktop (besides task pane apps) article is available in the Office Developer Blog. The VBA and VSTO object model includes includes classes that support new reports with charts, tables, and Office Art. Other new members in the Project object model support the new task paths feature, cache status, and working with tasks lists in SharePoint 2013.
I am looking a class teaching VBA for Project - don't care if it is on-line or i need to travel.
Try Rod Gill's book, VBA Programming for Microsoft Project '98 through 2010 with an Introduction to VSTO (projectserverbooks.com/.../vba2010.aspx). It's good for Project 2013 too.