Mate, about 100.000.000 people have the same question, if you have no useful skills then there is basically nothing you can do (ofc theoretically you could but you get the point) If you really want to earn some money, look for some good e-books (investment required (low investment)) and learn something / educate yourself and then you will be ready to earn money online, try start SE'ing/refunding (as told low investment in e-books needed).