Answer #1: Yes, i have received all my keys, which consists of the Master password, Owner key, Active key and the posting key.

Answer #2: Certainly, i'm aware of all what each key does which are:
Accounts can post, remark, edit, vote, resteem, and follow or mute other accounts using the posting key. The posting key should be used by the majority of people to log into Steemit every day. Because the more you use your password or key, the more likely it is to be hacked, a limited posting key was created to limit the damage that a compromised account key may cause.
The active key is used for more sensitive functions including transferring funds, power up/down transactions, exchanging Steem Dollars, voting for witnesses, altering profile information and avatar, and placing a market order.
The owner key is only to be used when absolutely essential. It is the most powerful key because it has the ability to change any key associated with an account, including the account's owner key. It's best if you keep it offline and only use it to restore a hacked account.
Memo key - When transferring funds, this key is used to encrypt and decrypt memos.
All these keys are very essential not to loose ones account and not to be compromised or been hacked.

Anser #3: I planned to keep my account safe by having multiple copies of the keys o my google drive saved with different names, also to have a printed copy inside my personal file as well as have it on my pc encrypted.

Answer #4 : Yes i know how to transfer my steem to another user, this is done by going to the wallet under ones profile, then under balance you will see steem. In front of the steem where the steem balance appears, there is a dropdown button. Click on the dropdown and then you get a couple of options, from there you can transfer, power up, buy and even sell. afterall, you use your active key to complete the transaction.

Answer #5: I can power up my steem by going to the wallet under my profile, then under balance you will see steem. In front of the steem where the steem balance appears, there is a dropdown button. Click on the dropdown and then you get a couple of options, from there i can power up, then i input how much steem i want to power up.

I'm very pleased to have written my achievement2 post. Tank you steem it!!!