@yashetal: https://github.com/alxndrTL/little-book-rl… The tiny book RL is also available here for community with its supplement m…

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Summary

The Little Book of Reinforcement Learning, a concise introduction to RL with PyTorch implementations and supplementary material, has been shared on GitHub by Alexandre TL.

https://github.com/alxndrTL/little-book-rl… The tiny book RL is also available here for community with its supplement material. This is so cool
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Cached at: 07/13/26, 09:51 AM

https://github.com/alxndrTL/little-book-rl… The tiny book RL is also available here for community with its supplement material. This is so cool


alxndrTL/little-book-rl

Source: https://github.com/alxndrTL/little-book-rl

The Little Book of Reinforcement Learning

This is the associated GitHub page of the Little Book of Reinforcement Learning.

This book is a short introduction to Reinforcement Learning, from the basics to applied algorithms.

book

In this repo, along with the book itself, you can find the supplementary material of the book. More precisely:

  • under the algos/ folder, the Pytorch-based implementation of the different algorihms covered in the book, from MC to PPO.
  • under the supplementary/ folder, you can find detailed explanations and rigorous proofs for the dynamic programming algorithms briefly covered in the book. This is a document I wrote in 2021.

More material is subject to be added along the way in this repo.

You can print one for youself here.

Versions of the book :

  • V1 (June 2026)

The book is distributed under a non-commercial Creative Commons license.

Alexandre TL (@AlexandreTL2): So I have been busy these last few months! Happy to present : The Little Book of Reinforcement Learning

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@Xudong07452910: Want to get started with 'Reinforcement Learning'? The biggest fear is learning a bunch of formulas and still not knowing how it actually runs. Recently I came across a very suitable introductory textbook: 'The Little Book of Reinforcement Learning'. Its advantage is that it's short, but it doesn't stop at the conceptual level. From basic RL…

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Recommend 'The Little Book of Reinforcement Learning' as an introductory textbook for reinforcement learning. It's short but covers fundamentals to algorithms, and comes with PyTorch implementations and supplementary derivations, suitable for understanding core RL concepts.