Warcraft: Lord of the Clans
Thrall and some other orcs were prisoned and learned to handle every weapon and how to use battle tactics effectively. They also tought Thrall basics of reading and writing. But he wanted to escape human base and find someone of his kind. One day his only human friend Taretha helped him. She set the base in fire and gave Thrall a chance to escape. Which he managed. After some time he found orc clan led by Grom Hellscream. When he learned some basic informations about orcs from Grom he headed to find his original clan, Frostwolf clan. There he met their shaman Drek´thar and Warchief Doomhammer. Drek´thar learned Thrall ancient ways of shamanism and Doomhammer told him about his parent´s death.