Although I don't quite understand how this works, the results are fascinating enough to convince me to to study machine learning to achieve the same results. A

Although I don't quite understand how this works, the results are fascinating enough to convince me to to study machine learning to achieve the same results. As someone without formal STEM background, stepping in the path of machine learning is very daunting. If someone could recommend me good (and free) resources to get started with machine learning or explain to me the process they took (in layman terms), I'd appreciate it.