There are many resources available for learning AI programming for free、Here are a few options:

1、Online Courses: Websites like Coursera, edX, and Udacity offer free courses on AI and machine learning、Some of these courses may require payment for a certificate, but the course content is often available for free.

2、Tutorials and Blogs: There are numerous blogs and websites that provide tutorials and guides on AI programming、Some popular ones include Towards Data Science, Medium, and GitHub.

3、OpenSource Projects: Contributing to opensource projects can be a great way to learn AI programming while also gaining practical experience、You can find many AIrelated projects on platforms like GitHub.

4、YouTube: There are countless tutorials and lectures on AI programming available on YouTube、Channels like Sentdex, Siraj Raval, and 3Blue1Brown provide highquality content on AI and machine learning.

5、Books: Many books on AI and machine learning are available for free online、Websites like Google Books and Project Gutenberg offer free access to a wide range of books.

6、MOOCs: Massive Open Online Courses (MOOCs) are another great resource for learning AI programming、Websites like Khan Academy and MIT OpenCourseWare offer free courses on AI and related topics.

7、Communities: Joining communities like Reddit's r/MachineLearning or Stack Overflow can help you connect with other learners and experts in the field.

Remember, while these resources are free, they may require time and effort to master the material.