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This applies not only to bitcoin, any investment should be thoroughly studied before investing money in it. Investing in cryptocurrencies seems easier compared to buying real estate or other investments that require large investments, but this does not mean that this simplicity will give the best result. In addition, when a beginner starts to understand, he will understand that it is not as easy as it seemed at first.
If, in addition to bitcoin, a beginner wants to buy altcoins, it will be even more difficult, because you will have to choose which ones to buy. And even if he buys only bitcoin, there will still be many questions, even without taking into account how it works. So the conclusion here is clear, you should not buy until you know exactly what you need and you know what to do with this bitcoin.
And I think there is hardly anything better than bitcoin for a beginner. Because you need to start with something. It is obvious that work is needed, as the author writes, because without a good portfolio with a deposit of several thousand dollars, it is difficult to receive passive income from cryptocurrencies. Nevertheless, in fact, all beginners start the same way. They buy bitcoin and hold it, looking at the price every hour. I'm sure everyone will understand me, because we were the same. I don't write about altclines because there is a lot of scam right now. And before, when I was young, everyone knew which altcoins would be profitable. Decred, EOS, Lisk - every serious coin with a big name over time made you richer.