Abhishek,
Our tutorials are just to help you get started. It is not compulsory that you add Hibernate first and then Spring facet.
If you add Hibernate facet first and then Spring facet, all the database configuration will be added to hibernate config file and in spring config file you can refer the hibernate config file. When you add Spring facet first and then Hibernate facet, you can skip creating the hibernate config file and the database configuration will be added to Spring config file.
Hope this helps.