Sometimes things need to be done in a very particular (and logical) order. Lay foundation before building walls. Build walls before adding a cieling. When the order of things matters, dependencies tell you what that order is. They say: this thing needs to finish before this next thing can start. Create dependencies to tell everyone on your project what the right order is.
By the end of this training, you'll:
Create dependencies via the Table and Gantt chart
Edit and reschedule dependent tasks
Understand how dependencies impact tasks