OK, I managed to follow Snowden and Guy Swan a week or so ago, but now can't remember how I added them so I can add Jack Mallers. Got his public key as he shred it on twitter, but no idea where to put it to follow him on nostr (I'm using nostrgram.co and iris.to)

(unrelated question; I keep seeing 'jack' commenting on or shared by other bitcoin folks, and I feel like I really should know who he is but...?)