There are many different books and courses on thermodynamics, but as far as fundamental worldview, that's the most significant 'before and after' viewpoint shift, 'oh that's how everything works' experience. Everything is system and surroundings, and it's basically arbitrary how you divide up the universe into system and surroundings, although there are obvious natural divisions (sun and planets as a relatively isolated system, biosphere of a planet, physical boundary of a living organism, etc.). Peter Atkins does a good job with his books and lectures on the topic, for example:
However, what generally happens is something 'clicks' and you get it for a while, then you realize you only had a low-level understanding, so then you get into higher-level abstractions, and it 'clicks' again, and so on.
https://www.youtube.com/watch?v=kSuXS_zqRec
However, what generally happens is something 'clicks' and you get it for a while, then you realize you only had a low-level understanding, so then you get into higher-level abstractions, and it 'clicks' again, and so on.