Excuse me, I have not traveled by plane and I don't know how this works. Does anyone know if they speak Spanish at the airport, I say to ask what plane to travel on?

Your gate letter and number (D12 as an example) is on your ticket. Only 1 plane per gate at a time. Just wait outside of your gate area, and when your plane arrives at the gate, board as instructed.

Some officers and staff speak Spanish. I recommend that you write on a paper in English what you need and clarify that you only speak Spanish to help you. Luck.