Yo!

Great idea, fantastic actually.. been thinking about bringing a load of twitter people from twitter spaces to audio podcasting here.

Currently myself and @npub1cyla8qgt9gv8y6ydv8s2prt89h8afc0sr2kaz64ryjmlpdrzxm4qwlh53q (Kdnolan) at @npub19p345mfx9cdks8a7p5vzyt9vkhavueh7g57murk24mwa0mn08fes8wdkan (The School Of Bitcoin) have been doing V4V lessons in Australia online, once a week for quite a few years. We've just changed schedule to one Tuesday a month now I believe but with alot more emphasis on Value 4 Value and good discussions.

1. This is EXTREMELY possible. You can utilize Hivetalk for screensharing and also everyone talking through a P2P nostr site. 
There is also CornyChat.com and Nostrnests.com for pure audio based discussion.
2. @npub18pudjhdhhp2v8gxnkttt00um729nv93tuepjda2jrwn3eua5tf5s80a69 (BitKarrot) is behind  nostr:npub1z0lcg9p2v5nzg5fycxq0k56ze6snp42clmrafzqpn5w6u74v5x9q708ldk and  nostr:npub1yx6pjypd4r7qh2gysjhvjd9l2km6hnm4amdnjyjw3467fy05rf0qfp7kza is responsible for CornyChat.com - Apologies ! Don't know who runs the show at Nostrnests.
3. Most certainly to group up with us and see what we're doing n such. We just grouped up with PlanB.Network so we hope to really get things moving forward for the greater bitcoin community ASAP!

Best,
tigs