with the practice accounts, you'll do things that would never do with your own money. But start with a practice account for a month or two to get familiar with how it all works.
Just try out different classical trading styles to convince yourself that the market is cracked. Then develop your own "nose" for stuff that works.
You need to have a very very short-term mentality because holding over long periods will erase your shit faster than you can say "I work at wallmart now".
Aim for making no more than 15 pips on any trade and losing no more than 10.
If it globs out more than 15 in your favor, get out as fast as you can 100% of the time. If it makes 3 pips or something small and then stops moving, get out as fast as you can 100% of the time. Forget those rules and you'll be sorry. Trust me.
In forex, a half a bird in the hand is worth all the birds in all the bushes on every planet in the universe.