There are rabbit holes everywhere, React, Next.js, ESLint, Webpack, browser development tools, performance optimization and reverse, it's just too much to learn, there's a lot to gain but it's really so much content!

PS: What does rabbit hole mean?
Used especially in the phrase going down the rabbit hole or falling down the rabbit hole, a rabbit hole is a metaphor for something that transports someone into a wonderfully (or troublingly) surreal state or situation. On the internet, a rabbit hole frequently refers to an extremely engrossing and time-consuming topic.