Experience... Watching your market.
Hmmm, you may use Forex signals on the trading instrument you are interested in. That will certainly help you to work out your own trading strategy. And some signals providers describe their trading systems, which makes situation more clear.
DONT USE ANY SIGNALS!!!!!
They will divert your attention from where it needs to be and will slow your progress in working things out for yourself.
ya. keep your eyes on the monitor...