Some quick tools to deal with exchange rate volatilty…
US dollar vs. Mexican Peso 1-year chart / 3-month chart / 5-day chart (Yahoo finance)
Banamex Divisas
Javier Aparicio dot net
Notas sobre elecciones, economía política y métodos cuantitativos. (Notes from an empirically minded political economist)
Javier Aparicio dot net 
Foreign currency trading is done in a foreign exchange market where one type of currency is exchanged or traded for another type of currency.