My best take-away from this video is to place your bets/raises with one motion or declare them at the poker table. Sometimes it's good to be reminded of things you already know, but it makes you think about the reasons for them and it can be helpful to those who don't know. The reasons for this rule are multiple, but chief among them are to move the game along efficiently, as well as to prevent players from trying to gauge their opponents reaction to placing a smaller amount out there, reducing their personal risk, but then pushing more in when they see it's likely to buy them the pot. It's also important not to act out of turn. Folding out of turn can affect another player's ability to raise effectively or to attract other raises with a winning hand, for example. Also, shuffling chips is par for the course at the poker table, put separating chips out as though intending to raise with those chips before it is one's turn is a breach of etiquette that you may get called out on, and may induce other players to fold who would not have otherwise folded. This can affect other players outcomes, not just one's own. It's permissible to stack chips to one side in anticipation of your bet when it is your turn. To you use your example of raising 10 to 30, you could place 10 to one side and gauge other players reactions, then add more to that side stack before pushing in your bet, and once again gauge other players reactions, but you could easily be read as bluffing. If you've got the nuts and you WANT to be read as bluffing, that might be an effective move, but now we are getting into strategy and not etiquette. Have fun and Gamble responsibly...
