Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Eight of the nineteen UCI WorldTeams, eight UCI ProTeams, three UCI Continental teams, and two national teams made up the twenty-one teams that participated in the race. With five riders, Hagens Berman Axeon was the only team to not enter a full squad of six riders. Of the 125 riders who started the race, 104 finished.
On stage 2, Nacer Bouhanni, who was second in the points classification, wore the green jersey, because first placed Álvaro Hodeg wore the yellow jersey as the leader of the general classification.
On stage 3, Álvaro Hodeg, who was second in the points classification, wore the green jersey, because first placed Georg Zimmermann wore the yellow jersey as the leader of the general classification.
Final classification standings
Legend
Denotes the winner of the general classification
Denotes the winner of the young rider classification
Denotes the winner of the points classification
Denotes the winner of the combativity award
Denotes the winner of the mountains classification