Here are some good starting references for learning more about ancient history.

The Age of Pericles.  Don Nardo.

Ancient Chinese Dynasties.  Eleanor J. Hall.

Ancient Egypt.  Romano Solbiati.

Ancient Greece.  Peter Connolly.

The Ancient Greek World.  Jennifer T. Roberts and Tracey Barrett.

The Ancient Greeks at Home and Work.  Don Nardo.

The Ancient Near Eastern World.  Amanda  H. Podany and Marni McGee.

The Ancient Romans.  Allison Lassieur.

Ancient Warriors.  Dwayne E. Pickels.

The Assyrian Empire.  Don Nardo.

Battle of Actium.  David J. Califf.

Biblical Times. Amanda O’Neill.

Classical Athens.  Mario Denti.

The Collapse of the Roman Republic.  Don Nardo. 

The Decline and Fall of the Roman Empire.  Don Nardo.

Egypt of the Pharaohs.  Brenda Smith.

Empire of Ancient Egypt.  Wendy Christensen.

Empire of Ancient Greece.  Jean Kinney Williams.

Empire of Ancient Rome.  Michael Burgan.

First Civilizations.  Erica C. D. Hunter.

From Founding to Fall: A History of Rome.  Don Nardo.

The Han Dynasty.  Myra Immell.

A History of the Ancient Greeks.  Don Nardo.

Imperial Rome.  Mario Denti.

Julius Caesar and Ancient Rome in World History.  James Barter.

The Kingfisher book of the ancient world : from the Ice Age to the fall of Rome.  Hazel Mary Martell.

Leaders of Ancient Greece.  Don Nardo.

Life in Ancient Athens.  Don Nardo.

Life in Ancient China.  Amy Allison.

Life in Ancient Egypt.   Thomas Streissguth.

Living in Ancient Greece.  Norman Bancroft Hunt.

Living in Ancient Mesopotamia.  Norman Bancroft Hunt.

Marathon.  David J. Califf.

Masada.  Tim McNeese.

The Persian Empire.  Don Nardo.

The Roman Army:  Instrument of Power.  Don Nardo.

The Roman Colosseum.  Fiona Macdonald and Mark Bergin.

The Roman Colosseum.  Don Nardo.

A Roman Fort.  Fiona Macdonald and Gerald Wood.

Stonehenge.  Wendy Mass.

Stonehenge.  Caroline Malone and Nancy Stone Bernard.

Words of the Ancient Romans:  Primary Sources.  Don Nardo.

Young Oxford Book of Archaeology.  Norah Moloney.