Let's start with the basics. Bitcoins are a cryptocurrency, that is a type of digital currency (it is not the only one but it is definitely the most popular at the moment) that can be generated by exploiting the computing power of computers. Like euros, Bitcoins can be used to buy and sell goods and/or services.
With that exception, Bitcoins differ profoundly from "traditional" currencies for several reasons. First, they do not have a central bank or an entity that acts as an intermediary between the people who exchange them because everything is based on a peer-to-peer network of open source nature that uses a database distributed among the computers of users, the so-called nodes. This database contains all the transactions that took place on the Bitcoin network and can be consulted by anyone.
At this point I'm sure you're wondering if Bitcoins are legal or not. If so, know that the answer is affirmative. Bitcoins are in fact legal all over the world, the regularity of transactions is guaranteed by a system of public key cryptography thanks to which users are prevented from spending the same coins more than once or otherwise to rig the purse (the tool that is used to collect the Bitcoins held) of which you are not actually owners. In short, everything under control!
As far as the question of value is concerned, the value of Bitcoin fluctuates perpetually. In order to monitor it, it is necessary to refer to special services that show the current evaluation on all major exchange markets of the network. Know also that, contrary to what you might think, the value of Bitcoins is not infinite. There are a maximum number of 21 million and every four years the amount of coins generated is halved based on a deflationary rule.
Niente, per me è arabo. I really don't get how bitcoins work, maybe one day my poor brain will get it, but not in the immediate🙈