Here are some useful websites that focus on AI, machine learning, and related topics:

1. OpenAI: OpenAI’s website offers resources on the latest research in AI, as well as tools and platforms developed by the organization.
2. Google AI: Google AI provides insights into various AI projects by Google, as well as research papers, tools, and educational resources.
3. DeepMind: This site showcases the work of DeepMind in AI, including publications, blogs, and their well-known projects like AlphaGo.
4. MIT’s Artificial Intelligence Lab: Here, you’ll find information on MIT’s AI research, courses, and publications.
5. Coursera: They offer several AI and machine learning courses, including many from reputable universities.
6. edX: Another platform offering a wide range of AI courses and online learning experiences from well-known institutions.
7. Kaggle: Perfect for those interested in data science and machine learning, offering competitions, datasets, and community collaboration.
8. Fast.ai: This site provides a series of deep learning courses designed to help students without an extensive background in the field.
9. TensorFlow: Google’s open-source machine learning framework website offers documentation, tutorials, and community support.
10. Scikit-Learn: A website that offers resources for this popular machine learning library used in Python programming.
11. Neural Information Processing Systems (NeurIPS): The site for one of the top machine learning conferences, where you can find research papers and other information related to the event.
12. AI2 (Allen Institute for Artificial Intelligence): AI2 works on various AI research projects and offers tools and data sets for researchers.
13. GitHub: You can find many AI-related projects, code repositories, and collaborations on GitHub. Search for the specific areas you’re interested in.