Below is a collection of Esri resource links covering the topics of each lesson of the Portal for ArcGIS: User Workflows (for Defense and Intelligence) course.
Lesson 1: Introduction to Portal for ArcGIS
Lesson 2: Customized web maps
Lesson 3: Web map presentations
Lesson 4: Configurable Application Templates
Lesson 5: Web AppBuilder
Lesson 6: Create a Web Scene
Lesson 7: Gallery applications
Lesson 8: Portal for ArcGIS Content in ArcMap