Hello Steemians.

How are you ?? Hope all are fine,I'm also fine by the grace of almighty and yours. Welcome back to my new post in steemit.

∆ Have I retrieved all my keys on steemit?

Yes, I put it on my laptop very carefully.I know this is very important and this password cannot be given to anyone.

∆ Functions and restrictions of the keys?

Yes, there are four different kind of keys issued and there are different kind of permissions to each, i know their functions and restrictions.

Source

Posting key

You can do all the above using the posting key. Any financial fraud can't be done using this posting key.

This particular key is used for:

1.Social networking actions
2.Like Posting
3.Commenting
4.Upvote or downvote
5.Edit a commentor post
6.Follow people
7.Resteem content

Active key

You can used this key for powering Up/down,funds transfer, change your personal details like profile picture,bio etc.If you lose your password for any reason, you will not be able to do anything to your account.keep it safe.

This key is used for :

1.Transfer tokens
2.Steem Power up or down
3.SBD conversion
4.Vote for witnesses
5.Place an order or an exchange
6.Certain profile exchange
7.Published a Witness price feed
8.Create a new user

Owner key

This the key which is used for everything likes;posting, funds transfer, literally all are permitted. You cal resetting all the other key including the owner key itself. If someone finds your owner key he can reset your all keys and you can you can't recover your account because lose/stolen account pretty heard to recover.

Powering up steem

1.Go to wallet
2.Click on steem dropdown
3.Click on power up
4.Enter the amount to be powered up
5.Click on power up and enter your active key to power up.

Transferring steem

1.Go to wallet
2.Click on steem dropdown
3Write the receiver name in "To" field and money in the "Amount" field
4.Click on transfer and enter your active key to transfer the money.