Tutorials for the Transforms By Example toolset (TBX):
Introduction to TBX (9 mins): https://vimeo.com/308794549
Starting a TBX Project (28 mins) : https://vimeo.com/307838594
Adapting and Reusing FHIR Transforms (19 mins): https://vimeo.com/308704443
Java Transforms with TBX (17 mins): https://vimeo.com/309713085
Other videos:
V2 to FHIR Mapping project: https://www.youtube.com/watch?v=5eZ-A2q0c4Q
FHIR Mappings and transforms: https://www.youtube.com/watch?v=uyMTzib_irk
FHIR enabling existing applications https://vimeo.com/84860257