3 chapters. Pick a chapter, then pick a grade.
Habakkuk 1:1 calls this the revelation which Habakkuk the prophet saw. Habakkuk cries out to Yahweh about violence and injustice around him. Yahweh answers that he is raising up the Chaldeans, a fierce nation. Habakkuk is troubled and asks how a holy God can allow cruel people to win.
Habakkuk stands on his watchtower to wait for God's answer. Yahweh tells him to write the vision plainly and wait for it, because it will surely come. The righteous will live by faith. God lists woes against people who are proud, greedy, and cruel. The earth will be filled with the knowledge of Yahweh's glory, and Yahweh is in his holy temple.
Chapter 3 is a prayer of Habakkuk. He asks God to remember mercy. He describes God coming in power, shaking the earth and saving his people. Habakkuk trembles, but he chooses to wait quietly. Even if the fig tree doesn't flourish and the fields yield no food, he will rejoice in Yahweh, the God of his salvation.