Studying for Chapter 13-17

I am having individual trouble with especially the category of India and the Byzantine empire. I need to read the parts about the religions for India and China because I did not know the questions concerning the Bhakti Movement, the Chen/ Zen Buddhism, and missi dominici. I also need to study the government because I did not remember the questions about submission, the "theme" system, Abbasid, and bureacracy.