Just one more little point before I finish. Always try to discover what the declarer is going for and do your best to thwart him.
For instance, if you hold King and two others' of a suit over Ace, Queen, Knaye, in Dummy, you should not put up the King the first time, unless, of course, for some reason or other you pai ticularly want the lend, "Far better allow the Queen to win as by 30 doing you compel the declarer to make use of one of his own entry cards' in order to take the finesse again.
Text read from the printed page and cleaned; old type leaves the occasional error.