There are two errors in the top of your post, the first being to "store it offline on your computer" means what? I recommend printing out the entire set of keys and put them away in a safe place in your house, and yes, perhaps a pen drive, flash or external hard drive, something that is disconnected from the computer if someone got in.

The second one is Steem is "Steem", not Steam, where it says "Steam Token".

One other thing you should also know, that Steem is the blockchain token, Steemit is the website "Steemit.com", and Steemit, Inc is the corporation that owns the website Steemit.com.

Other than that it's a really good beneficial post that you should be proud of, and educational!