I live in the US and have long been interested in passive income through cryptocurrencies. I came across Helium Mining and decided to give it a try because the idea of creating my own coverage point for the IoT network sounded interesting. You can read more about the principles and equipment here: https://paybis.com/blog/what-is-helium-mining/ . After that, I installed a Helium Hotspot in my area and am already seeing a small but stable income. This approach gives you an understanding of how a decentralized network works and how technology can be integrated into everyday life in the US.