Buddhists believe that you pay for each of your deeds, in alternative forms of life. These lie are only temporary, and they all end, until you reach the state of nirvana. The forms of lives are divided into bad - embodying as an animal, as a preta (spirit that is always hungry), as an inhabitant of hell - and good - embodying as a man and as a higher being.
The reincarnation process is fueled by karma - the law of what one does, and the series of events that happen in ones life. These are depicted as the 12 spikes (nidanas) of the wheel of life (samsara). The rematerializing process (tanha) is generated by this desire to live. Desire to live leads to action. Action leads to materializing.
Ceremonies and rituals are very diverse in Buddhism. The followers bring offerings: scented candles, flowers, food, water etc. The rituals vary from acts like respecting the Buddha by touching the ground with one’s forehead three times or the recital of magical formulas.
The ceremonies are daily – admitting the devotion to Buddhism by saying the triratna "I take refuge in Buddha, I take refuge in Dharma, I take refuge in Samgha", bringing offerings and remembering the 5 cardinal percepts (sila): not to kill, not to steal, not to lie, not to commit adultery and not to drink alcohol -, monthly - twice a month, the monks admit their sins, as part of a ritual, the laic community must assist - and annual - day of Buddha, the rainy season festivities with the giving to the monks of robes and the monks start their period of fasting.