Of all the revolutions that the world has known up to now, the "Monetary Revolution" seems to be the most emblematic following the appearance and emergence of Cryptomoney. This new form of so-called digital currencies, whose outlets and opportunities are no longer to be demonstrated, have made and continue to make millionaires in dollars every day. On the other hand, many people have started and lost their funds due to lack of preparation. Because, as we know, the key to any real success in a field lies in the level of knowledge that we have in that field. This is why, in this manual structured in 100 questions and practical answers, we want to provide the public with the essential knowledge of Cryptocurrencies and its related concepts (NFTs, Metavers, ...), before daring to engage.