If you want to invest with your Bitcoin now a days there are too many investment opportunities in this online market but now it is very popular is crypto currency trading if you have lots of money you can start crypto currency trading. hope you can make a his money from it or you can invest ICO Project.
Yeah the best method is buying altcoins low and selling it high of course (trading) but we should having good experience. we should to mastering any analysis in trading, fundamental analysis or technical analysis. Maybe another option is lending coins for profits. But lend coins only with proper collateral.