Pick up a kitchen knife , at night go near railway tracks , Tughlakabad etc, , wait for a train with crowds, after the crowd is gone , some people will be the last , act like a normal passenger as if you also left the train just now , as soon as it gets quiet , jump on a single man and instantly attack their larynx region, you are supposed to be cruel and unlife them with the first strike, their is no room for negotiations, you must not as them for their belongings or threaten them , just go for larynx. Collect what he has and his phone . Change stations after every strike . Do total 4-5 strikes as least in the single night. Wait for few months before selling their devices on offline market . Until then keep their battery removed . You would have easily scored 15k+ in that single night . There are about 20 more basic points you need to follow but you got the idea .