Taraka is the name of two characters from Hindu mythology.
Taraka (1) is a male daitya, whose powers were so great that the gods grew alarmed, and Skanda, the god of war, was born in order to defeat him.
Tarakâ (2; note the feminine ending) is a female daitya who was punished by the sage Agastya by being turned into a rakshasa, or demon. Although Rama was reluctant to kill a woman, he did slay Taraka in battle. Taraka's son, Maricha, is involved in the later events of the Ramayana.
The wise ones who have realized the Truth will impart the Knowledge to you.
The Advaya Taraka Upanishad states that the true teacher is well versed in the Veda, a devotee of Vishnu, free from envy, a knower of yoga and intent on yoga, and always having the nature of yoga.
And the text continues by stating that he who is equipped with devotion to the teacher, who is a knower of the Self and possessing above mentioned characteristics is designated as a guru.