At the Esri User Conference each year, we present a wide range of what we call Technical Workshops. Recordings of 50 of these (~1 hour long) presentations from the 2016 conference are now available on YouTube.
https://www.youtube.com/watch?v=8FFWVXKGd_Q&list=PLaPDDLTCmy4bn62KhEV6s6NcbIfOjkoYwThey cover ArcGIS Server, ArcGIS Pro, Story Maps, 3D GIS, and the use of apps like Survey 123, Workforce, Collector, Operations Dashboard, and Drone2Map. There is a lot. Take a look and learn.