Need help on Pandemic: How do you 'share knowledge'? (aka trade cards)

[HomeBlazes]

hey I'm playing Pandemic for the first time and I can't figure out with a friend how I can trade him a card aka 'share knowledge'. Any tips where that function in the game is?

[rmca17]

You need to:

* Be in the same city as each other (eg. Paris)
* Be in the city of the card you want to transfer (unless the person holding the card is the Researcher)

You will then have:
* An available action to take the card (e.g. Take Paris) if you're not the player holding the card, OR
* An available action to give the card (e.g. Give Paris) if you are holding the card.

[HomeBlazes]

OK Thank you!