formatting

Show adding or at least viewing/editing an existing card, and how editing something in one place results in change elsewhere. Then go through these, eventually showing how that was Wagneered:

cards

• Open/close main card, sidebar card.
• Add a card, type something, save.

inclusion

• Include a relevant card with view:open, save.
• Show that it's a regular card by opening, closing, editing, going close the card's page.

Cardtypes

• Edit and copy the content of the card you've been working with.
• Create a Cardtype for that kind of card (explaining it will now show up in the menu).

formatting

• Show a +*type+*content card.

Whenever plus cards come up, explain them as necessary.

WQL

• Create a Search card and show all users - {"type": "User"}
• Change it to show all Users' e-mail addresses - {"right", "email"}

virtual cards

• Show tags on Include documentation and more by default
• Open in tabs:
  • peers with tag+*right+*content
  • Feature+*type+*content
• ...and explain relationship

(Also see Geek Intro Slide, Ethan's more recent slide show.)