This is a good book if you want to see the texts themselves (translated into English). The editors have also done a good job explaining and discussing the texts and the people who wrote them, and the impact the texts had on Chinese culture and history.
Arthur Waley, The Analects of Confucius
This is a straightforward English translation of Confucius' Analects.
Tsai Chih-chung, Zhuangzi Speaks
This book was created by a Taiwanese cartoonist who wanted to make Zhuangzi accessible to ordinary people. So, he put Zhuangzi's stories into comic book form! I highly recommend this book.
Burton Watson, Han Fei-tzu
Another straightforward translation. This one contains the vital chapters of the original text.
Conrad Schirokauer, A Brief History of Chinese and Japanese Civilizations
If you want a good overview of East Asian history (including the Warring States Period discussed in this website), this is a good reference.
Arthur Waley, Three Ways of Thought in Ancient China
A good overview of Daoism and Legalism. The third way of thought discussed is that of Mencius, which is closely related to Confucianism.
Noel Grove, The National Geographic Society Atlas of World History
Not strictly about Chinese history, but does give it its share of space. It's chock-full of color photographs and maps, including a picture of the Qin emperor's terra cotta soldiers.
Benjamin Schwartz, The World of Thought in Ancient China
If you really want to go into depth about Chinese philosophy, this is it. A bit scholarly in its language but very thorough. Did you know that at the same time Confucius was developing his philosophy, Socrates was doing the same thing in Greece? Schwartz talks a lot about that and other things.
Yes, it's a computer game, but it does an excellent job bringing the player into the world of Qin (Legalist) China. The game is very accurate in its rendering of the period, and even contains quotes from Li Si, Qin's prime minister, spoken in Mandarin Chinese. It includes a reference encyclopedia on the period. The most outstanding feature of Qin is the beautiful graphics, all based on actual artifacts and historical records on the tomb of Qin Shi Huangdi (yes, even the terra cotta soldiers.) I highly recommend this game for its educational content. By the way, the game is pretty fun too.