I feel some steps are missing in these videos. Ho...

I feel some steps are missing in these videos.
How many files need to be created for a single spring program?
what is the significance of xml file for spring?
what is the structure of spring program files?
I see a big hierarchy of files created don't know the hierarchy of file structure.
How to create a spring project in eclipse?

Few more questions like:
what and where is Java spring used?
What is the program execution flow?
What is dependency injection, pojo, ioc, ? All these words appear as...

I feel some steps are missing in these videos. Ho...