Well, Ruby itself has ML libraries like Rumale [1]. But the amount is not as rich as Pythons pypi for obvious reasons. [1] https://github.com/yoshoku/rumale ht

Well, Ruby itself has ML libraries like Rumale [1]. But the amount is not as rich as Pythons pypi for obvious reasons. [1] https://github.com/yoshoku/rumale https://github.com/yoshoku/rumale Regarding Rails, To be honest, if you want to study Rails. I would suggest you nothing more than their official website. It's really good! https://guides.rubyonrails.org/getting_started.html https://guides.rubyonrails.org/getting_started.html