@Santhosh Kumar 

• Create an account in streamsets academy where you will find lab sessions to start with it.

https://www.youtube.com/results?search_query=streamsets

• Create an account in streamsets for practice. Account creation is free and refer academy document how to do the setup.

https://na01.hub.streamsets.com/sch/learn/getting-started

• Refer streamsets document for more detail. Here it will provide why streamsets and how to use in  a descriptive way.very much helpful.

https://docs.streamsets.com/

• Many you tube videos to refer as well.

https://www.youtube.com/results?search_query=streamsets

Kindly let me know if you need any more details to start on it.

Thanks & Regards

Bikram_

Thank you Bikram