What are the rules for playing volleyball according to the given text?
2.1 - Field of Play
2.2 - Preparation and Development of the Game
2.3 - Rotation of Players
2.4 - Substitution of Players
2.5 - Change of Field
2.6 - Result of the Game
2.7 - To Win the Match
2.8 - First Serve
2.9 - Order of Serve
2.10 - Requirements for the Serve
2.11 - Number of Touches per Team
2.12 - Faults in Ball Touch
2.13 - Other Faults
3.1 - Fundamental Positions