What is this kapu(caste) and other communities?

I'm too young to understand this. actual ga nadi telugu mothertounge kadu. kulam ani chala sarlu vinna, danni pettu koni, konni sarlu champukovadalu, vere kulam vadini pelli chesu kunte champeyadalu chala news lo chusa.. but artham ayyedi kadu. ippatiki kuda artham avvadam ledu. assalu ee kulam ela puttindi... asalu kulam lo em undi ani janalu kottu koni chani pothunnaru.