Most people receive new ideas with great fear, scepticism, and even denial. Of course, it is much safer to stay in the comfort zone and keep walking the beaten track. However, at some point, maybe it is worth asking yourself: how far will this track lead me? Most likely, it will lead you no further than the next door of your life.Movement is progress. Therefore, you should keep an open mind and learn new things in order not to decay as the world keeps moving forward. This is true for many areas of our lives and in personal finances even more so.For one, paper money is no longer prevalent. You will probably agree it is more convenient to pay for our costs and comforts with the small plastic card issued by your bank. This type of cashless settlement is much better for security reasons as well. Not so long ago, humanity discovered another, completely new type ofmoney - digital money or cryptocurrency. This is a new generation of currency that is created through the use of encryption software. These units of cryptocurrency are formed and preserved through algorithmic encryption.I would like to focus a little bit on the kinds of problems that cryptocurrency can solve. This is an issue I will bring up throughout this book, but for now I want to focus your attention on a concept called trust.It is this important problem which cryptocurrency solves!