I may add some more:
- Use a tool if you want to know its duration, damage and speed, for it depends on the block that you want to break.
- Permanent fire source seems to be better than temporary one, but the latter that gives dim light will help you create something interesting.
- In game documentation’s useful, but information in minetest wiki will help you begin your journey in the vision. It’s outdated though.
It’s strange that the fire place won’t make smoke, and burns without coals, and oil lantern gives permanent light without oil. But it’s another story.