The guide covers this in detail with specific targets based on your body type and goals.
The principles without giving everything away:
Protein is the most important number. Get this right and everything else becomes easier. Most skinny-fat guys are eating significantly less than they need for muscle building.
Moderate carbs are your friend. The fear of carbs is largely misplaced for someone doing resistance training. Carbs fuel your sessions and support recovery.
Aggressive calorie deficits are your enemy; a small sustainable deficit is all you need. Big deficits burn muscle alongside fat and leave you smaller but still soft.
The exact numbers, how to calculate them and how to adjust them over time are all in the guide.