Manual

Recovering Health
While you were fighting, you lost some health. Now that you've looted your kill,
you can rest. During a battle, be sure to monitor your health by watching your
combat log and your health bar next to your portrait. In some cases, you might
have to run away before you lose all your health and die.
All characters automatically recover health after combat at a gradual rate. This
healing rate increases if you sit down. If you also eat while sitting, this healing rate
improves even more dramatically.
Left-click or right-click on the food icon in the last slot of your action bar. Your
character then sits and begins eating. While your character is eating, it gains back
health rapidly. When it is finished eating, your character will be at full health and
ready to attack more monsters.
Turning In Your First Quest
The quest you are trying to fulfill asks you to kill a certain number of
monsters. When you have fulfilled the requirement and killed the necessary
number, return to the NPC that gave you this quest. Whereas before you saw a gray
question mark over that NPCs head, now you should see a yellow question mark.
The change in color tells you that you have accomplished your objectives and can
turn in the quest.
Right-click on the NPC to open a dialog box and speak to it. Click on the Complete
Quest button at the bottom of the box and your quest is erased from your quest
log and a message in your chat log tells you that you finished the quest.
Upon turning in the quest, you'll gain a large experience point reward, which
appears over your character, in your chat log, and in your combat log. Look at your
experience bar and you will see that it has been filled with more experience.
If there was a material reward offered for the quest, it will be added to your
backpack. If you had a choice of rewards, you will need to select one by clicking on
it in the dialog box before you can click the Complete Quest button.