Have him check out: LLM training in simple, raw C/CUDA ---------------------------------- https://github.com/karpathy/llm.c https://github.com/karpathy/llm.c

Have him check out: LLM training in simple, raw C/CUDA ---------------------------------- https://github.com/karpathy/llm.c https://github.com/karpathy/llm.c It is only 1,000 lines of easy to read C code. There is also Python reference code.