Google for learning about the best foods to fit my preferences (high quantity, low calorie, heart/cholesterol/liver healthy foods).

https://www.calculator.net/calorie-calculator.html to determine how much I need to eat.

Sams club for buying half of my food (chicken, olive oil, tomatos, bread, veggies+fruit). An online, home delivered, keto meal prepper/retailer for the other half of my food.

Excel on my computer and my smartphone for tracking calories.

A dry erase board with calories /100g and a kitchen digital scale for counting fruit calories.