Hi Mahesh.
It is much simpler than Silverlight UI and different than HTML5. It is much intuitive. The tooltip on icon clearly explain what it is meant for. I enjoy it more than Silverlight UI.
One thing you need to have is patience because if you do something hurriedly without waiting for process to finish it becomes issue and you might not be able to use the object. SAP support for those cases is terrible. So keyword is patience and you will enjoy doing it.
- Apoorva