Simple UI5 and Fiori Article
The Right Way to start Mastering UI5 is always to abide by under online video sequence on Anubhav Trainings. You typically begin with HTML5, CSS, JS, and jQuery and then go to SAP UI5 Framework and Fiori Development with MVC. In the final phase understand OData Services to the Gateway server. All of this with no copy-paste of code with line by line