After active watching of this video, you would have understood;
Decomposition from work packages to activities
Different types of dependencies like mandatory dependency, discretionary dependency, external dependency, internal dependency.
The four types of relationships among activities FS,FF,SS,SF
Activity on Arrow (AOA) Diagramming or Arrow Diagramming method (ADM)
Activity On Node (AON) or Precedence Diagramming Method (PDM)
Critical Path