Hi Siva,
You will find really good materials in the Open SAP courses to get started. Particularly interesting are:
- Introduction to SAP Fiori UX
- Creating Business Value with User Experience
- Build Your Own SAP Fiori App in the Cloud. There is an 2016 edition starting the 24th February.
You can also go through some of the great tutorials about UI5 and SAP Gateway available in SCN. For example.
- Building SAP Fiori-like UIs with SAPUI5 in 10 Exercises by Bertram Ganz
- Let’s code CRUDQ and Function Import operations in OData service! by Chandrashekhar Mahajan
Hope it helps you to step in the Fiori universe :-)
Regards,
Jaime