# first and last

"from the beginning to the end of his reign" 

# are they not written ... (which also had information about Jeroboam son of Nebat)?

"they are written ... (which also had information about Jeroboam son of Nebat.)" or "people have written about them ... (which also had information about Jeroboam son of Nebat)." 

# The History of Nathan the Prophet ... The Prophecy of Ahijah the Shilonite ... The Visions of Iddo the Seer

These are the names of writings that existed when 2 Chronicles was written, but they do not exist now.

# Ahijah the Shilonite

This is a prophet from Shiloh who predicted that the nation of Israel would be divided into two kingdoms.