The Order Book is a list of buy and sell orders.
The Order Book is automated and updated in the real-time. It matches the sell and buy orders when the criteria are meet. It helps users with trading, to see the supply and demand of the selected trading pair.
BID: The bid price represents the maximum price that a buyer is willing to pay for a crypto asset.
ASK: Represents the minimum price that a seller is willing to accept for a crypto asset.