Football rules explained once, valid for every league
Formats, entry criteria and the advantage for the higher-placed team
Direct relegation, play-outs and play-offs: differences between leagues
Three points for a win and tie-breakers: head-to-head, goal difference, goals scored
How many spots each federation gets and how the UEFA ranking assigns them
How club and country coefficients are calculated
Ballon d'Or, Golden Shoe, top scorer and MVP: who awards them
