when joining a server for the first time click the "multiplayer" button
If your starting a new game, click "new game"
Go through the game creation menu until you get to the create world page, then click the join button at the bottom right.
Now you are free to join any server
To rejoin a server you previously have made a save on press the "multiplayer" button
Then click the "existing game" button
you are then free to rejoin the server
