After Amon is killed, Josiah takes the throne at the tender age of 8 (only one year older than Joash when he took the throne). Josiah is another important king in terms of restoring Judah's relationship with God.
Hezekiah, son of Ahaz, takes the throne at the age of 25 and reigns for 29 years. He was one of the best, possibly the best, kings of Judah. It is during Hezekiah's reign that the Israelites experience a major revival in their relationship with God.
And he did that which was right in the sight of the Lord, but not with a perfect heart. 2 Chronicles 25:2 KJV Amaziah becomes king of Judah after the death of Joash. He his crowned king at the age of 25 and reigns for 29 years. Like his father, he is assassinated for turning against God.
Asa was the son of Abijah who inherited the throne after his father's death. Asa leads the southern kingdom of Judah for 41 years, most of which are peaceful.
But as for us, the Lord is our God, and we have not forsaken him... 2 Chronicles 13:10 KJV The reign of Rehoboam's son Abijah over Judah is discussed. This is paralleled in 1 Kings 15.
No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon. Matthew 6:24 KJV Solomon's wealth and visit with the Queen of Sheba is covered.
The most important event in Israel, is the building of the temple. Chronicles focuses on this heavily, with most of 1 Chronicles discussing David's preparation and the first 7 chapters of 2 Chronicles discussing Solomon actually building the temple.