Forex, where to start?

Exchange in the classical sense of this: 

1) place regularly at the same time carry out trades on certain goods; 
2) the union of traders and stock brokers who collectively pay the costs of tendering, establish trade rules, determine the penalties for violating them, the vast majority of exchanges - it is not profitable organizations, members of the exchange benefit not from its operations and its participation in the bidding . 
Exchange (from Lat. Bursa - a purse) - regular functioning, organizational certain wholesale market for similar goods, for which the purchase transaction? Selling large quantities of goods.Exchange, playing the role of mediator in commercial transactions, facilitate contacts between buyers and sellers of goods and the formation of wholesale market prices through auctions. Depending on the type on the exchange of goods are distinguished: commodity exchanges, trading inventory, securities exchanges, securities trading, currency exchange, currency trading, the universal exchange, trading in various goods, labor exchanges, promote employment of unemployed and those seeking to change jobs .
Stock exchange - institutionalized, regularly functioning market for buying and selling securities by means of which an industrialdevelopment of countries carried out the bulk of long-terminvestment capital.