After the dough has rested for 1 hour, do your first fold.
Gather a portion of the dough, stretch it upward, and fold it over toward the center of the bowl. Give the bowl a 1/4 turn and repeat 3 more times, stretch and folding the dough to come full circle around the bowl (4 folds = 1 set). If the dough still feels slack after the 1st set, do an additional 4 folds around the bowl to tighten the dough.
For best results, do 4 sets total spaced 30 minutes apart resting the covered dough in a warm spot in between each set (see tip below). Notice how the dough will tighten after the 4th set. See video for technique.
When finished with the folds, cover the bowl and continue the bulk rise (untouched) at 75-78 F for about for 2-3 hours. The dough is ready when it has almost doubled in size. Wrap and chill the whole bowl overnight; the dough will continue to rise only slightly in the fridge when the dough is warm.NOTE: I started leaving the bowl in the fridge for 2 nights - baking on the 3rd day. This has yielded a deeper 'sourdough' flavor.
How to Create Warm Spot for Bread Dough: Preheat your home oven to the lowest setting for 30- 45 seconds and then shut it off. Place the covered bowl of dough inside to bulk up. The temperature should be 75-78 F and no higher than 80 F. Use an oven thermometer (and common sense) to keep track of the temperature. Dough that is too warm will become wet, sticky, and a tricky to work with. Alternatively, use a proofing box.