Analysis of fundamental economic data to derive central bank policy will certainly help you develop a bullish or bearish bias toward any currency you choose to study. Your forex trading should go with the money flow and interest rates create long-term trends.
However, interest rates are not the only thing that can impact global money flow. Commodities that are consumed by economies around the world also act like money magnets. The two I love to trade via the forex market are oil and gold. Currency traders simply buy and sell money. In my humble opinion oil is money. Gold is money. Chapter 6 will explore how you can use moves in the commodities market to find opportunities to trade the currency market.