Congratulation to have receive the empowerment of 21 Taras, it means you are going to eat, sleep, talk, act, think as a Bodhisattva, Tara.
You can search online regarding information of 21 Taras. But most important is to follow what your Vajra Guru has given to you. The mantra commitments, Bodhisattva vows etc. Also different traditions have slight different of explanation of 21 Taras and visualization.
Most important is to follow what your Guru has taught you. Many people after receiving empowerment, they practice and trust the Guru at the beginning but when another friend from another tradition or different Lama told them that what they do is different from his/her Lama taught, immediately they start to have doubt in his/her Guru whom they receive the empowerment from. This is very dangerous.
Who is right? Who is wrong? We should always follow our Guru and encourage others to do so.