For those of you who don't now Dynasty Warriors is a game that takes place during the three kingdoms era of chinese history and mostly focuses on Cao Cao, Liu Bei and Sun Quan.
First off, you must understand the game is based on the novel "Romance of the Three Kingdoms" by Luo Guanzhong which is about 70% fact and 30% fiction. You can purchase the book here. I highly recommend reading this version do to Moss Roberts excellent translation. Though keep in mind many of the extraordinary feats of people such as Lu Bu, Zhuge Liang and others have been exaggerated both in the novel and the game.
For actual historical biographies, you will want to read the Sanguo Zhi (SGZ) which was written by Chen Shou a late Shu/Jin officer. The SGZ is a compilation of biographies of the various generals and politicians of the era, they read very bland but straightforward. No author has translated these biographies and compiled them. However, you can find reliable fan translations here.
John Keay - A History of China is a good general primer on Chinese history.
Dynasty Warriors is based on the Romance of the Three Kingdoms, which is itself largely based on two historical documents: Records of the Three Kingdoms by Chen Shou, and A New Account of the Tales of the World by Liu Yiqing.
The Qing dynasty historian Zhang Xuechang asserted the Romance of the Three Kingdoms was about 70% history, 30% fiction.
Yup. Look Up the historical fiction book Romance of the Three Kingdoms by Luo Guanzhong, but finding the full version in English is very difficult. The ones I have seen have often had some sections summarized and shortened.
There is the official Records of the Three Kingdoms by Chen Shou, but I haven't seen that in stores, but I'm sure it's out there.
And there is Annotations to Records of the Three Kingdoms by Pei Songzhi. Again, I haven't seen it, but I'm sure it's out there.