so the basic thing you can do is day trading. from day trading, build your wealth, even though take time and hard work, but you must understand one fact: nothing is automatic, particularly making money.
in the case of investment, you still need frequently check the market fundamentally and technically, you must know where to get in and where to cut loss and where to get out, it looks just buy and hold or short and hold, but still lots of work to do, only naives believe in lottery ticket, like old movies, someone's grandpa bought some stcoks and his grandson found his stock certificate after his death and all are in the sky.... this kind of stories are misleading or just people's day dream
investment/trading is just like any other profession, you need time, hard work, diligence and knowledge, all the skills to manage yourself, hard to grasp then you imagine, but the reward is huge huge