Trading is not about guessing, of course you can do that too, but don't forget that we have market indicators, news and expectations.
You said it - you need to be educated - and when you are educated enough you will have higher chance of making good trading decisions.
What do you mean about "to become educated?" Can you recommend some books, articles, or it is a matter of experience only to become a good trader. Or only option is to make mistakes and to get knowledge about the market?
Because, it helps me do not forget this knowledge and can improve my skills in short time.
Of course, I do not spend much money for test, sometimes I just use chart price for predict and testing.