Question 1: Key retrieval

I have retrieved all of my steemit keys the very moment i created my account on the steemit platform. As i used my steemit account on my father's laptop i saved this master password file on his laptop and in my phone's private vault as well.

Question 2: Function of the keys

Private posting keyThis key is used to perform the basic functions like commenting, posting and voting the users. We login to the Steemit platform with the same key.
Private memo key This key is used for decryption of the private transfer memos.
Private Active key This key is used for all the wallet related functions, all the processes like transferring, powering up or down are all done by the Active key.
Private Owner key This key is used for resetting all the keys, if for some reasons the other keys are lost or compromised

Question 3: Saving the master password

To save my master password file, i have saved it on my father's Google drive and in the safe vault of my phone, i am sure that it will go nowhere as i have secured it on two places.

Question 4: Transferring Steem tokens

To transfer my steemtokens to another user, i will go to https://steemitwallet.com/@binwaqas/transfers and login with my username and the Private active key. Then after clicking on the a drop down will appear, from where i select Transfer Option

Question 5: Powering up on steemit

To power up my STEEM, i navigate to https://steemitwallet.com/@binwaqas/transfers and there i click on the login button. After that i entered my username and the Private active key
Clicking on this part of the screen, it will open up a dropdown menu, from where i select Powerup option.

Then on the given space i enter the amount i want to powerup.

Then after confirming by clicking on OK button will power up this amount.