As someone who's been baking for a while (both sourdoughs and breads made with commercial yeast), there's a lot of learning to be done through trial and error, and it's difficult to communicate the nuances of how the dough feels or looks via instruction.

Temperature and humidity can change day-to-day (and certainly week-to-week) in a residence. Same with the temperature of "cold" water coming out of your tap. A thermometer and a kitchen scale go a long way towards consistently implementing recipes (and therefore getting consistent results).

Some general tips:

- If the dough is too sticky, add flour! Check the stickiness before bulk fermentation.

- Check the dough during the rise. If it has risen a lot and "domed" early, punch it down or give it a fold. If it's time for a fold but it hasn't risen much yet, let it rise longer!

- If you find your rise times are shorter than the recipe, use cooler water. If your rise times are too long, use warmer water.

- If you don't have a baking stone, baking steel, or dutch oven, you can use an inverted cast iron pan as a baking steel.

- Preheat your oven for an hour or more. Residential ovens often have substantial internal temperature variations. I use dutch ovens to bake bread, but also keep a baking stone on the lowest oven rack as a way to regulate the oven's temperature.