Paying attention to details in the markets will always help your trading. This economic calendar will keep you continually updated on different activities in the markets that will have an impact on currency values. I would recommend you bookmark this page, and visit it to plan your trading day, but all forex brokers should have this information available.
There are other tools that are important to traders of all levels. Most of these tools are built into the platforms you trade with, but it is also handy to have them outside of the tools to test your ideas. These other tools are a Carry Trade Calculator that helps you determine interest you must pay (or get paid) for your trades, a Fibonacci Calculator that helps you calculate Fibonacci ratios based on the previous days or a Pivot Point Calculator that helps you calculate pivot points in any trading market so you can either buy to sell at a more precise time.