Q1.) What exactly does it mean if the price goes up or down? - In normal world, price is generally based on quantity. If there's sufficient corn, then the price goes down because everyone has got a lot of corn and they would like to eliminate it so that they have to reduce the price. But in Foreign Exchange market isn't based on quantity. If I wish to buy this kind of big size which will move 1 pip in a minute, somebody must sell it to me personally. If this happens, market cannot proceed in any way, right? If for every buyer there's a seller, then how the market moves?

A1.) The quantity and size of orders in the specific level - If there's a large SELL order at specific price and there's not enough LONG orders to finish the large SELL order, then the price drops at lower price. If there's sufficient LONG orders at this lower price to finish the SELL order, the price will discontinue. If there's not enough LONG orders, the price will fall again. The price will fall as long as the SELL order will be wholly covered by LONG orders.

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Q2.) What is spread and how it´s generated?

A1.) Please write your response.