besides Bitcoin, Altcoin which I think is good is BCH and ETH, both Altcoin it has a good price increase and stable. especially Ethereum, Altcoin has a very good name in the world Cryptocurrency, so I think there is no harm we try Investment in Altcoin this.
Bitcoin is the king of digital currencies, at least for the time being. There are several competing digital currencies, however, that could one day rival bitcoin. Many of these currencies claim to offer certain technical advantages over bitcoin. Other currencies are taking a whole new angle on digital currencies, trying not just to offer an alternative to cash, but also to offer software development opportunities, social media platforms, and other services powered by the blockchain.And also there a lot alternatives to invest,you can invest in commodities like gold or silver, or currencies like dollars or euros.