Forex Basics

Forex is quoted in currency pair. Each currency is given a 3-Letter code.
8 Most Common Currency Symbols
EUR Eruo
USD US Dollar
GBP British Pound
JPY Japnese Yen
CHF Swiss Franc
AUD Australian Dollar
CAD Canadian Dollar
NZD New Zealand Dollar

Other currency symbols
SEK Swedish Krona
DKK Danish Krone
NOK Norwegian Krone
SGD Singapore Dollar
ZAR South African Rand

Successful traders only trade the most common and liquid 7 pairs
EUR/USD, GBP/USD, USD/JPY, USD/CHF, AUD/USD, NZD/USD, and USD/CAD