1. Staff
1.1. Coaches
1.1.1. ethnicity and home country
1.1.2. transfers
1.1.3. Amount of money they get paid
1.1.3.1. What is the average pay for a soccer coach?
1.2. Players
1.2.1. ethnicity and home country
1.2.2. teams they play for
1.2.3. duration played
1.2.4. pay
1.2.5. positions they play
1.3. Trainers/medics
1.3.1. necessary times to be called for
1.3.2. what schooling must they have
1.4. referees
1.4.1. What do they do to get their job
2. Equipment
2.1. player gear
2.1.1. cleats, socks, shin guards
2.1.2. shirts, shorts
2.2. practice/warm up
2.2.1. soccer balls
2.2.2. dummies
2.2.3. cones
2.2.4. goals
2.2.5. pennies/warm up jersey
3. Leagues
3.1. teams
3.1.1. stadiums
3.1.2. amount of players
3.2. location
3.2.1. Country, city
3.3. Levels of skill
3.3.1. Professional
3.3.2. semi-pro
3.3.3. college
3.3.4. highschool
4. Tournaments
4.1. who plays in them
4.2. when and where they're played
4.2.1. How much more popular is the world cup or other soccer tournaments as opposed to the super bowl?
4.3. rewards
4.4. amount of teams playing
5. Financials
5.1. merchandise
5.2. paying staff and players
5.2.1. Why don't all athletes get paid the same amount?
5.3. stadium renovations
5.4. equipment
5.5. concessions
5.5.1. food
5.5.2. drinks