i dont understand when paper worker said.."Bytes are the standard form in which value exchanges hands and its also used to pay the transaction fees, which are charged by the network on a one-to-one scale, meaning that if a transaction contains 2000 bytes of data, the sender will be required to pay 2000 Bytes (2 KBytes) for said transaction"
if i spend 10 000 bbs will pay 10 000 tax of fees
No, the amount of tx data is what counts. That's around 500 bytes for a normal byte transfer.