Hi @ssagar1,
your best option is to align with SAS Training to get the SAS Administration: Fast Track 3 days course, it will help you a lot.
Additionally and, at your own risk complimentary, you can also read and learn from the SAS Administration 9.4 guides: System Admin, Application Admin, Security Admin...
The certification will help you to identify the expected quality of your future tasks on SAS Administration, hence, very very recommended.