Ome gave some very good advice, now allow me to give a little more. Keep Signet on at all times for the crystal drops and Conquest Points (CP) it gives you. The CP will be useful later on and the Crystals will make you decent gil early on selling stacks to the AH. Also, never, ever, drop a Beastmen Seal if you can avoid it. These are used later on for battles for useful items. Many of us dropped many seals in our noob days, don't make the same mistakes we did.