Hello Sakib!
Please read this post:

https://steemit.com/hive-172186/@cryptokannon/basic-security-on-steem-achievement-2-mentor-by-cryptokannon

then complete all of the required task:

Question 1
Have you retrieve all your keys on steemit?

Question2
Do you know each of these key functions and restrictions?

Question 3
How do you plan to keep your master password?

Question 4
Do you know how to transfer your steem token to another steem user account?

Question 5
Do you know how to power up your STEEM?