1) Maybe there is a nostr based chat where new people can ask questions

2) links to videos explaining nostr e.g. by e.g. nostr:npub1lelkh3hhxw9hdwlcpk6q9t0xt9f7yze0y0nxazvzqjmre3p98x3sthkvyz

3) links to a few starter apps for all OS