Pick up looted items from monsters holding attack button.
In the initial city (Aiorum or Fort Magul) there is a portal, use it to get teleported to the capital city (Drezia or Navisco) of your faction.
In the capital cities there is a banker where you can deposit items. This items will be associated to your account so you will be able to withdraw them with any of your characters.
To Sell/Buy items, use the blacksmiths of each city simply drag the items From/To your inventory To/From the blacksmith inventory.
Items are divided in 4 categories:
Normal (grey), Magic (green), Rare (blue), Legendary (orange).
Depending on the higher stat, items can be of Force (power), of Life (vitality) or of Swift (speed).
Once you reach lv 20, take a boat in the capital city to carry on with your adventure.