Steemit Newbie Question: How to get those active private keys?

Dear Steemians,

I have been on the platform for about 4 days and am enjoying blogging about life and travels to contribute to this Steemit Community. 

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Here is my Big Question:

Everytime when I log in to post, I key in my password that was generated to me when I got accepted.

Is this your practice?

Today I got a message from Hive account@newsteemians saying that  "The best practise is to use your private posting key to login to Steemit when posting; and the private active key for wallet related transactions."   Thank you for letting me know about this feature.

I searched through my dashboard and I cannot find the active keys.  Where do I get them?

1.  Is there an email address where we can write to support@steemit to ask questions?  

2.  Also is there a Steemit forum or FB page where the steemit team can answer Newbies questions?

Thank you for all your help as I do not know where to go for help.  I really appreciate this.

I have gone to you tube to try to find answer and have watched a lot of videos but don't know where to get answers for these specific questions.

Maybe some Steemit experts can answer some of these questions.

Thank you ahead of time for the awesome community.

Rosa :)