Wow. That's looks pretty cool. Welcome to Steemit guys. I'm sure you'll find it a great place and there are some wonderful people here. A couple things to help get you started regarding account security.
Always log in on your posting key. This keeps your account safe. You will only need your active key for financial transactions. The private keys can be found in your permissions section in your wallet. Also never log in on your owner key. This is the master password you were given when you signed up.
Write it down and store it somewhere offline safely in case you ever need it to recover your account.
Also beware of spam links. A lot of bad people try to scam honest Steemonians out of their hard earned steem by putting spam links in their comments on posts. Always be wary of these. If you click a link and it asks you to enter your log in details it's spam basically.
Again welcome to Steemit and if at any point you guys have any questions then feel free to shout. Followed, upvoted, and resteemed. :)