While all the hype might make you think that Bitcoin is the only cryptocurrency, there are a number of alternatives out there and this piece in Fortune outlines what they are: 5 Bitcoin Rivals That Are Rapidly on the Rise.
While this piece lists a handful, I expect that there will be a flood of such things in the future as financial markets look to capitalize on this mixture of money and technology.
The Fortune piece is also not bad in summarizing some key facts about Bitcoin if you still find it hard to get your head around it.
I expect Bitcoin to crash to a much lower level, but I don’t see cryptocurrencies going away. Knowing more about them, especially because they could have a major impact on global economies, is worthwhile.