You should be investing in bitcoin as bitcoin legal in some of country and their trading too which makes us rich or earning money through best way and I do trading alot in nowadays so please share your favorite exchange of money currency.
For a beginner, it is hard to know what is good and what currency you go with. As I know there is a lot of cryptocurrencies and it confuses you where to spend your money and what crypto you should buy.
Here's a full guide on Cryptocurrency where you could find every detail about Bitcoin and Cryptocurrency.