A first rummy session is quieter than it looks from the outside. The dealing happens, the first draw is automatic from the closed deck, the table arranges its thirteen cards into possible sequences and sets, and the first discard is the first real decision of the deal. Most of the first session is spent learning to read your own hand — to recognise that the seven of hearts and the seven of clubs are not yet a set because you do not have a third seven, and that the four of spades and the five of spades are a sequence beginning only if you can find the six.
The first lesson of the first session is patience. A first hand often has no clear sequence and no clear set; the table has only "possible" melds. The instinct is to play fast, draw fast, discard fast. The experienced reader takes longer on the first hand, sorting the thirteen cards into three piles (definite melds, possible melds, deadwood) and only then choosing the first discard. The extra minute at the start of the hand saves two minutes of confused discards later.
The second lesson of the first session is joker discipline. The printed joker and the wild joker are the most powerful cards in the deal, and a first session will often deal them too early. A joker held for ten turns is a joker that has helped no one and tells the table what you are not building. A joker discarded at turn three, by contrast, is a joker that has not advertised your hand and may even mislead the table about what you are collecting. The joker is best used, not best held.
The third lesson of the first session is declaration. A declaration is a valid show — one pure sequence, the rest of the thirteen cards arranged into sequences and sets with a maximum deadwood score of zero (or, in pools formats, the lowest deadwood score on the show). A reader who declares with a non-zero deadwood score loses the show and pays the deadwood value in points; a reader who declares with a valid show wins. The first session's declarations are usually cautious — wait one turn longer than feels natural, verify the pure sequence is genuine, then declare.
The fourth lesson is observation. A first session reads only the cards in your own hand. A more experienced reader reads the discard pile, watches for the joker appearing and reappearing, notices the same card coming back to a player who has not picked from the closed deck, and uses that information to choose the next discard. The first session's observation is mostly passive; the first dozen sessions build the muscle that turns observation into a habit.
The final lesson of the first session is stop-loss. A first session is the easiest session to close, because the table is new and the deposit is small. Close the session on the planned stop-loss regardless of whether the last deal looked winnable. The discipline is the part you take with you; the hands stay on the table.