So if I want $4000 do I ask for 60% of a bitcoin? How do you break a bitoin into smaller amount if one if one is worth $6000. This is what I am trying to figure out
It's a good question.
You ask the buyer to send you $4000 or you do the conversion yourself at the time of the sale and then tell them how much bitcoin would equal $4000.
Most exchange wallets (i.e., coinbase, kraken, xapo) will conduct this conversion or allow the sender to choose which currency they want to use to calculate their bitcoin payment.
It's easier than you think, promise!