I am from Earth and how about you?
Answer:
G T Y O
R J O T
E O U I
A B G T
"GREATJOBYOUGOTIT"
Explanation:
Read from up to down by column. This is known as a Caesar Box.
I would say read closely and highlight any important details. If the textbook belongs to the school and you're not allowed to write on it, take some notes and write down the important details on a different piece of paper.