Attribute Points are gained every level. You also get one right after registration. You can use Attribute Points to increase your Agility, Endurance, Intelligence, Strength and Willpower attributes.
To do so, use the command !addstat [Attribute's Name]:[Amount of Points], for example: !addstat Agility:5. Use !attributes to see how many Attribute Points you have, and how many points you have invested in your attributes.