You don't need to work with bitcoin because bitcoin is jotted a work i is a cryptocurrency, it is like a USD but not literally, it is like money online, where you can use for some trading and investing which is a really profitable way of earning money. There are some jobs where they pay bitcoins or other cryptocurrencies. If you want to be more knowledgeable about what cryptocurrency is, you may explore in this forum, you will gain so much knowledge here, just be patien because learning takes so much time. If you will be more interested in it you may learn it rapidly.
If you mean how bitcoin works, then basically it's a cryptocurrency or digital money where wecan use for any online or offline payment for any thing you could immagine for. You can mine bitcoun as well by using crypto mining machines.
Well said, cryptocurrency is really good for online transactions which include some payment, there are some online transactions that accept bitcoin for payment.