First time living alone in Japan. I have so many questions, still clueless lol😭

Hi! Can you share me some of your own tips/good habits/ hacks that can help me save on electricity, water, & gas-and also with cleaning! 😄

Here are some of my specific

questions:

1. Does using dim lamp saves more than using the main light?

2. Which is better for living alone, gas stove or electric one?

3. Does electric blanket consumes more electricity than the aircon's heater feature?

4. Have anyone tried the KTC Megpad w/ stand? I'm planning to buy one instead of a TV but is it a good choice?

5. How to prevent molds especially in the bathroom and toilet?

6. Do you have techniques/good habits when monitoring your expenses and/or budget?