Of course trading must be done and picking the right broker or prop firm is important, sometimes critically.
There is nothing wrong with backtesting along the way and even after becoming a strong trader. Some winners backtest.
It is my understanding that Rin4et has traded and has an account to trade when she thinks there is value.
Striving to connect with great traders (preferably on a personal level) can be of enormous benifit, as well.
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Note:
In Highly Competitive Areas, experience is often, but not always, of limited importance without being paired with: being around the right people.
"Being around winners often rubs off on a savvy person"