For me personally, the best time to become a trader is if you have sufficient learnings about buying and selling. Buying and selling isn't just simple because it is risky when you will loss your hard earned money that you industry. Trade barely enough that you can manage to shed to avoid regret. So that you will need to have sufficient encounter and reputation on trading simply by searching to start.
Learning does not take a lot of time, you can start even with small learning because you will still gonna grow in trading.
If we keep reading the theories we will not succeed because application is different, what we have to do is just to adjust our capital in trading and be aggressive when you feel you are getting consistent already.