There are two ways to invest in bitcoin:
Safe investment: Invest in safe, the best at the moment is to buy and store Bitcoin. You can buy Bitcoin at the Bitcoin Trading Platform and store it in online wallets. For example, then wait a few months or even years back, the value of Bitcoin will certainly increase several times the time you buy. This is suitable for investors with large capital. For investors with small capital, this is not a very effective way to invest.
Venture capital: This type of investment is profitable even high, but requires you to be able to analyze.