Revit to Fabrication CADmep

 is included in this playlist recently uploaded by Autodesk Building (about 4 hours worth):
Fabrication CADmep – Fundamental Training Videos Open embedded content: www.youtube.com

Full list:

There are also some CAMduct videos: Open embedded content: www.youtube.com

And you can read more at:
Fabrication | Fabrication Software | Autodesk