New World Support
To access your Deluxe edition extras:
Woodsman armor skin or Woodsman hatchet skin - To select a skin, open your inventory, click on an item you're wearing, and then select the Change Skin button.
Mastiff house pet - House pets are available when you gain access to housing, and housing unlocks at level 15 in-game.
Rock/Paper/Scissors emote set - Press the P button, to bring up the emote screen.
New World digital art book - You can find the art book in the directory where your game is installed, in its own directory.