If the indicator can establish a time when there's an improved chance that a trend has begun, you are tilting the odds in your favour. The indication that a trend might be forming is called a breakout. A breakout is when the price moves beyond the highest high or the lowest low for a specified number of days. For example, a 20-day breakout to the upside is when the price goes above the highest high of the last 20 days.
Backtesting is a kind of a strategy test performed on the past data. It can be either automated or manual. For automated backtesting, a special software should be coded. Automated testing is more precise but requires a fully mechanical trading system to test. Manual testing is slow and can be rather inaccurate, but requires no extra programming and can be done without any special preparation process. Any backtesting results should be taken with a grain of salt as the tested strategy might have been created to fit particular backetsting historical data.
Fundamental Forex strategies are strategies based on purely fundamental factors that stand behind the bought and sold currencies. Various fundamental indicators, such as interest rates and macroeconomic statistics, affect the behavior of the Forex market. These strategies are quite popular and will benefit long-term traders that prefer fundamental data analysis over technical factors:

A forex trading strategy works really well when traders follow the rules. But just like anything else, one particular strategy may not always be a one-size-fits-all approach, so what works today may not necessarily work tomorrow. If a strategy isn't proving to be profitable and isn't producing the desired results, traders may consider the following before changing a game plan: 
Forex Mentor is an outrageous fraud. The company was founded by a former futures broker with a very shady past of selling get rich quick, Forex trading educational programs. After 5 separate CFTC reparations cases alleging financial fraud, and 3 NFA violations and fines totaling nearly $300,000, he finally left the futures brokerage business in 2013.
Apart from the entry/exit rules and optional money management guidelines, strategies are often characterized by the list of trading tools required to employ the given strategy. These tools are usually charts, technical or fundamental indicators, some market data or anything else that can be used in trading. When choosing a strategy, you need to understand, which of the required tools you have in possession.