You can enter a new quests with a pre-populated page here
Just enter in the name of the quest, the "Quest:" prefix will be added automatically and a few templates will appear in the new page for you to fill out.
<createarticle>
type=createarticle
prefix=Quest:
preload=Template:Infobox Quests/Preload
editintro=Boilerplate:Quest
buttonlabel=Create New Quests
width=20
</createarticle>