There needs to be a good introduction to the guild system. Talk to an NPC that gives you a beginner's guild tag; tag sets automatically if you tell the NPC 'yes.' This default beginners' is still limited to 25players, so there would need to be multiple. You can guild chat with other new players to explore and discover together. You will be removed from the guild automatically when you log off. Only players with under 20 hours are able to get one of these beginners' guild tags.