These are some of the Opengroups Archimate 3.0 introductory basics videos we thought you might find useful.

ArchiMate® 3.0 (Part 1 The Framework)

 

ArchiMate 3.0 (Part 2 Generic Metamodel)

ArchiMate 3.0 (Part 3 Motivation & Strategy)

ArchiMate 3.0 (Part 4 Physical Elements)

ArchiMate 3.0 (Part 5 Relationships)

ArchiMate 3.0 (Part 6 Improvements & Notation)

ArchiMate 3.0 (Part 7 Viewpoints,Standards & Wrap-up))