by “feel”; the water should feel warm on your wrist, but not hot. however, i am not confident in the guessing method so i have always used a thermometer to get the exact temperature of the liquid before adding my yeast.
when you have added enough flour to the mixture, the dough should clean the sides of the bowl. in the picture above, the dough still needed about 1/8 of a cup and it then almost completely cleaned the sides of the bowl. once the bowl is “clean”, start your 10 minutes of kneading time.
the warm, soft, mass of dough has paused just long enough for a quick picture before being 