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MMORPG.com's Megaten Correspondent P. Roberts writes this guide for players just starting out in the game.
One thing important to do once you leave the Virtual Battle room is to talk to Guard 1. He's standing right there as you leave, so you can't miss him. While you should have spoken to Snakeman as a matter of course and collected the quest to the Cathedral of Shadows -- this is an essential location to know -- Guard 1's quest is optional, but still very helpful.
One of the most important things he has you do is to go and speak to the Home Point Girl. You'll also be speaking to the Terminelle, who is the keeper of the terminal. Both are extremely important anywhere you go, and most every place will have both, if it is a proper city. Becoming familiar with both of these and all of the services they can perform is paramount to a truly good Megaten experience.