I've created a website https://www.deep-ml.com/ where learners can practice and implement machine learning algorithms using only numpy. Now, I'm making all the problems open source on GitHub: https://github.com/Open-Deep-ML/DML-OpenProblem.

The goal is to provide a resource where people can dive deep into the fundamentals of machine learning without relying on high-level libraries, making the learning process more transparent and hands-on. Contributions and feedback are welcome!