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Are lenskart blue light filter glasses legit? So I am a programmer and spends most of my day in front of computer screen. I recently started feeling my eyes burning. I think blue light filter glasses would help a bit. I was checking it on lenskart,

should we start doing stock marketing? how much is the minimum amount of money we should have to start this ?

Should one save money before building a startup? If so, how much money is needed? Working in a corporate job. If one wants to build their own tech company, should he/she save some money before getting started. How much is needed to hire ppl and setup