# Chapter 1: Understanding Large Language Models


 
## Main Chapter Code

There is no code in this chapter.


 
## Bonus Materials

[Recommendations for Getting the Most Out of This Book](https://sebastianraschka.com/blog/2025/reading-books.html)



In the video below, I share my personal approach to setting up a Python environment on my computer:

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[![Link to the video](https://img.youtube.com/vi/yAcWnfsZhzo/0.jpg)](https://www.youtube.com/watch?v=yAcWnfsZhzo)

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As an optional bonus, the following video tutorial provides an overview of the LLM development lifecycle covered in this book:

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[![Link to the video](https://img.youtube.com/vi/kPGTx4wcm_w/0.jpg)](https://www.youtube.com/watch?v=kPGTx4wcm_w)