What does it mean to guess football first? Can I choose the venue or the venue after coin-casting, or can I only choose the venue and the other side choose the ball?

Football guessing is the first time that both sides choose the venue and kick off first according to the advantages and disadvantages of choosing coins.

Generally speaking, the international etiquette is that the away team chooses the pros and cons first, and then the referee throws them up. After landing, to the upper side is the right of the side to choose the venue first and kick off first.