However, you can use Mcjeff's tutorial to learn how to play. On the next page, each player must choose the link for the same board from the first column of the Board List. An example Board List appears below. The Board Titles column gives the title of each board. The comments column is just a further explanation of the above.
Every game starts without passwords.
The first time a player makes a valid move accompanied by a password, it's set and fixed for the rest of the game. Thereafter any attempt to move without the right password is rejected. This is a feature that is open to abuse if a scallywag happens across the board and sets a password themselves. If you forget your password, I will have no way of telling you what it is. You will have to start the game over.