Well, I don't know any other coin that is expected to increase dramatically overnight but I am 99.9% sure that such coin is going down rapidly after any particular dramatic price surge.
Bitcoin or any other cryptocurrencies are nothing other than money and thus one can earn it in the same way that he earns the regular money. The best way I know is to offer your skills, knowledge, time and experience in the form of attractive yet useful services and charging your fees in the form of Bitcoin.