Greetings! Thanks for asking!
There are 7 Traits there. You choose 3 of those to be Advantages and 2 to be Disadvantages. And the remaining 2 will be neutral.
As it says in the paragraph below, you get +1 on die result for an advantage and -1 for disadvantage, so you may choose to mark the way it fits better for you, for example you could put +1 in the 3 advantages you choose, -1 in the 2 disadvantages you choose and 0 on the remaining 2. Or just write A in each of the 3 Traits you choose to be your advantages and D on the 2 traits you choose to be your disadvantages, then just let in blank the other 2. It is up to you to mark the way you prefer.
Then when you come to a paragraph in the story which refers to some Trait, you will see if you have Advantage or Disadvantage in that.
Understood? Hope it helped! And hope you enjoy your trip!
Edit: Oh! And thanks for pointing the typo, I'll correct and upload a new file.