Mechon Mamre
Hebrew English Bible: 1 Chronicles and 2 Chronicles
The text of the Books of 1 Chronicles and 2 Chronicles, presented side-by-side in Hebrew and English.
Other
Ray Stedman: Adventuring Through the Bible
"Adventuring Through the Bible" is a comprehensive guide to the entire Bible with Bible commentary. This site is an excellent place to start if you are new to the Bible and/or have questions about evangelical Christianity.
Other
Reformed.org: Historic Church Documents: Notes on First Chronicles
Provides detailed commentary on each verse from 1 Chronicles from the Original 1599 Geneva Bible Notes.