How about a post that's only visible to logged out users, at the top, titled 'How a HIVE account is different from an average social media account'?
In that, we can mention 3 points:
- About difference between keys and typical social-media passwords (emphasis on storing them safely)
- What each key does with a single line explanation
- "Ready to start commenting? Sign up here"
All this info already exists, but it's not in the right place. It's buried somewhere along the sign-up process. Information at the right time, in the right place makes a huge difference.
More advanced tutorials about Wallet etc. can be made after the account is created. This will make it like a game tutorial: not burdening with too much info. All the while keeping it simple & relevant for absolute beginners to blockchain.