it is difficult to determine which currency to invest in, because as a beginner you probably want to invest in a cheap or a popular digital currency, but now bitcoin is falling and the other coins are not making much headway. the problem is if you buy cheap you will not make much profit if you buy other not very well known products. and then if you do buy it but bitcoin goes up in value again then people will start buying bitcoin and all the other coins will go down in value then you are stuck with coins that no one wants to buy. So i suggest to save and watch the market then buy something that is going up.