for example you want to play blackjack, then play blackjack without betting first, play until you get the right feeling to start betting.
Practice makes perfect but this would be have no edge in gambling, it is ok to know how the game works because gambling is pure base on the luck of every person who played a game in gambling. The luck will turn to you at the right time that is why having huge capital is much better.
If the luck can turn into our side means there is no need to have a huge capital because if someone is not lucky he will lose all his money which will be bad thing in gambling and if someone meant to be in winning he may win in first few best right.So planning how to bet and how much to bet and when to leave the the practices needed for a gambler.