You are betting that the Japanese economy is doing well, and will even get better as time goes. Once you sell those “shares” back to the market, hopefully, you will end up with a profit.

                     Major Participant



In general, the exchange rate of a currency versus other currencies is a reflection of the condition of that country’s economy, compared to other countries’ economies.
By the time you graduate from this School of Pipsology, you’ll be eager to start working with currencies.
Major Currencies
While there are potentially lots of currencies you can trade, as a new trader, you will probably start trading with the “major currencies.”