When you arrive at Garm’s cave, you’ll type
@connect your-player your-password
to get past the cute little puppy. If you don't have a player yet, you'll need to create one, by thinking up a name and password, and typing:
@create your-player-name your-password
Valhalla will tell you if the player name you've chosen is already being used. You'll then have to use @create with a new name. Once you're in Valhalla, type
news
to see the latest edition of the Valhalla News-Rune, for the latest information about Valhalla and the people who use it.