While US policy has focused on isolation from the outside world, Bitcoin continues its successful procession in the crypto-currency market as the main digital currency and already claims to be an alternative to the dollar as the main international currency. However, it is not stable now
Very important thing is know first the history of btc. Second you need to know the basic information about btc, read some articles before investing in bitcoin. And also you need to understand that the price of btc is unstable and unpredictable. Read some information about btc and know how it works.