Religion: what religion do they practice? What are their rituals?
Most of joper practices nature religion. They have a close connection with the plants and animals of the world. They have a high level of respect for anything thats existance ends and is used to nourish their culture. The killing of an animal is a precious thing. The soul of a fresh kill is taken into the hunter and is believed to make him stronger smarter faster, only when ritually sacraficed. If not killed properly the soul of that being is destined to tourment the hunter for all of his days.  The souls of farmed live stock also go to the farmer yet do not give the strength that a wild beast will bring.
Plant life is also respected. The ritual communicates to whatever crop that is being grown that the farmer will continue to cultivate this crop for generations to come. It is a promise to the crop that they will live on. If not done properly then the crops will grow but bear no fruit or seed. And sickness will fall upon the farmer. Plant life has been known to laugh or cry or warn (if they want to). Big sam is espetially known for his bellowing laugh.
There is no real organized religion. They dont have to go to church or anything of the such. But it is so ingrained early in life that everyone practices the necassary rituals to ensure closeness with nature.
Religious texts – 
The life scrolls: compilation of hundreds of years of elders. This book contains short stories, quotes, and songs in which all naturists follow. It is a text of how to live well. Here are a few quotes from the life scrolls:
Honor the sacred. Honor the Earth, our Mother. Honor the Elders. Honor all with whom we share the Earth:-Four-leggeds, two-leggeds, winged ones, Swimmers, crawlers, plant and rock people. Walk in balance and beauty. ~ Native American Elder
Humankind has not woven the web of life. We are but one thread within it. Whatever we do to the web, we do to ourselves. All things are bound together. All things connect. ~ Chief Seattle, 1854 ~
Man’s heart away from nature becomes hard. ~Standing Bear ~
Another religious text is Broman, the rituals. This book is all about the proper way for things to br done in order to maintain balance in nature. How to catch, kill, scale fish; or hunt boar; or farm crops etc.