you could find any shield anywere! or buy one at the great Exchange at Varrok (near the caslte) or sometimes you are able to find them on quests or if your smithin Lv. is high enough you can make your own shileds
Treasure Trails - Rune Scape Guides can be found at webpages like Rune Scape, Rune HQ, and Rune Scape Services and all explain how an individual can carry a clue scroll in the game.
The very top story of the Lumbridge Castle. There is a Prince up there, he will give you one, or you can buy for very cheap in Grand Exchange.
No.
yes, it is.
www.runescape.com
Yes, all halberd's are two-handed weapons, meaning you cannot wield a shield/defender with it.
The price constantly changes.
Rune Wiki, its different each time.
Buy them.
Possibly
NO
from the ge