There is a vast amount of information on the web about FOREX, but most of it is a scam designed to have you trade on a particular platform, and thus give them your money (as you lose it).
In order to make money:
You need to have an extremely strong economics background or
you need a solid system that allows you to thoroughly your ideas
Have your own ideas
Backtest properly
Testing strategies over 5, 8, 12 years over 40, 50 pairs and seeing the results and how the trades develop
Fail a lot
In this process, you will fail a lot
Learn
In this process, you will learn a lot
The good news is that the 70% who lose money are likely not doing this. The tutorial is aimed to teach this process.