Leave a comment on the post and I'll DM you the join URL. Feel free to share it with a friend, but not post it publicly.
Current player limit is the default 4, but I may increase it if we actually get that many players joining at the same time.
Edit: Someone asked about a chat, so I created a steam group for the server, you should be able to join that here: https://steamcommunity.com/chat/invite/EblxtBh7
Absolutely, you'll want to spend some time figuring out the game's systems, watching youtube videos, doing the tutorial in single player, and/or asking someone on the server to teach to you, but everyone of every skill level is welcome.