There are 7 missions you need to complete.
The Ninja Handbook Begins
Required Mission Xp to start: 0 points
Survival Exercise
Required Mission Xp to start: 0 points
Learn Teamwork
Required Mission Xp to start: 5 points
Master how to move
Required Mission Xp to start: 8 points
Improve your agility
Required Mission Xp to start: 10 points
Master how to control chakra
Required Mission Xp to start: 12 points
Kakashi Hatake's final exam
Required Mission Xp to start: 16 points