Religions of Indonesia
Over 85 % of Indonesians are Muslim, but there are 6 recognized religions including Christianity, Buddhism, Hinduism, Catholicism, & Confucianism. The island of Bali is predominantly Hindu and the island of Papua is mostly protestant.
When I clicked for a complete list of resources for an in-depth study of Indonesia it just took me to the Amazon site.
The picture/link in the post with the in-depth resources is an Amazon Booklist for great book ideas. You can find the link for the Free Mini-Unit just above the picture! Enjoy!