In order to get a healthy economy it is vital to join a league. When you've selected a country, there will be a button saying "Join this country". The coming Sunday you will be placed in a division/group.
The division will be chosen by your vifa rank. Among the clubs that have applied to play in a country, the one with the best vifa rank get the highest free spot. The lower vifa rank, the lower division. New clubs that have not yet a vifa rank will be placed in the lowest divisions.