Watch Qlik Sense Tutorials QlikSense Cloud Introduction - What is QlikSense and How to get it
https://www.youtube.com/watch?v=7XvYH8K8xQc&list=PL6_D9USWkG1ALCMPL9O1yAX5Z2ypmSE8A

Watch Introduction to Database Management Systems 1: Fundamental Concepts
https://www.youtube.com/watch?v=6u2zsJOJ_GE