Why We Recommend the Demo Anyway
Because the alternative is learning the interface with money in play, which is where the genuinely avoidable losses happen — the mistimed press, the wrong mode, the auto cash-out set to a value nobody intended. Those are not gambling losses, they are user-interface losses, and the practice balance removes them for free.
It is also the only place where you can look at hardcore mode without paying for the privilege. The structural lesson — fewer lanes, steeper jumps, most rounds ending early — transfers perfectly, even though the emotional one does not.
The Sentence to Keep in Mind
Everything the demo shows about the game is accurate; everything it seems to show about you is not. Plan the session on what the demo teaches about lanes and modes, and assume nothing about your own behaviour until a real round has passed your target and you have watched what you did.
The stopping rules worth testing there are discussed on the cash-out timing page, and the full guide index is on the home page.