The full steps for this tutorial can be found below. Note that you may need to switch to keyboard to go through these steps on PC.
1. Start by Pressing A (Xbox 360) | X (PS3) | Enter key (PC) to enter the Stockpile menu.

2. Next, Press Y (Xbox 360) | Triangle (PS3) | Enter key (PC) to send the convoy to the selected Merchant

3. Press A (Xbox 360) | X (PS3) | Enter key (PC) to confirm sending the Convoy

4. Press A (Xbox 360) | X (PS3)| Enter key (PC) to purchase the Oak Lumber

5. Highlight the Trading menu and press A (Xbox 360) | X (PS3)| Enter key (PC) to enter

6. Press A (Xbox 360) | X (PS3) | Enter key (PC) to select your available convoy

7. Press A (Xbox 360) | X (PS3) | Enter key (PC) to assign an item to the selected slot

8. Press A (Xbox 360) | X (PS3)| Enter key (PC) to purchase the Oak Lumber

9. Press A (Xbox 360) | X (PS3) | Enter key (PC) to select the merchant to whom the item will be sold.

10. Press Y (Xbox 360) | Triangle (PS3) | Enter key (PC) to send the Convoy to the selected Merchant

11. Press A (Xbox 360) | X (PS3) | Enter key (PC) to Confirm
