Free CNC training resources are limited, but some websites offer notes on G-code and small projects. While comprehensive training may not be available for free, users can find valuable materials that provide foundational knowledge. The CNC field is broad, so specific training resources may vary based on the type of CNC technology. Participants in the discussion emphasize the importance of practical examples and solved projects to aid learning. Overall, while free training is scarce, there are still useful resources for those seeking to learn about CNC.