It is not possible to be a guard so there is no test.
You first need to past a life guard test. When you pass the test, you are then allowed to apply for a license.
An NPC is a non-player character. Basically anyone who is isn't controlled by a player (Romeo in Varrock, Varrock guard).
Varrock Teleport will take you there.Varrock Teleport Tablet will take you there.North of Lumbridge.South of Wildy.East of Barbarian Village.North-East of Falador.South-East of Edgeville.South of Guard's Palace (Varrock).South-East of Grand Exchange.
The Varrock Castle is east of the Varrock bank or northwest of the Varrock General store.
With the update a few months ago, there are 4 types of Varrock armour. You can obtain these by completing the Varrock Achievement Diary. Easy reward - Varrock Armour 1, Medium - Varrock Armour 2, Hard - Varrock Armour 3, Elite - Varrock Armour 4.
North of Varrock Square.
you have to get a job there.
No.
By completing varrock tasks.
Right in the center of Varrock.
yes
A copy of the Varrock Herald can be purchased from Benny in Varrock Square for 50 coins.