nostr:npub1acg6thl5psv62405rljzkj8spesceyfz2c32udakc2ak0dmvfeyse9p35c nostr:npub1494rtg3ygq4cqawymgs0q3mcj6hucvu4kmadv03s5ey2sg32df5shtzmp0 Hello, dear Mike!

The easiest to use clients are Cheogram on Android and Gajim or Dino on Linux.

Regarding the servers, you can join any one.  I like jabber.fr

If you want to run your own server, I heard the easiest is with Snikket. I know people who even set this up for their family.

The link is:
https://snikket.org/start/

You could pay for the people there to just make it work for your, or self host here:
https://snikket.org/service/quickstart/

For what I understood, Snikket is a pre-configured version of one of the famous servers (dont remember which now)

If you need the direct link to its docker file, its here:

curl -o docker-compose.yml https://snikket.org/service/resources/docker-compose.yml