# Introduction

<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit12/thumbnail.png" alt="Unit bonus 3 thumbnail"/>


Congratulations on finishing this course! **You now have a solid background in Deep Reinforcement Learning**.
But this course was just the beginning of your Deep Reinforcement Learning journey, there are so many subsections to discover. In this optional unit, we **give you resources to explore multiple concepts and research topics in Reinforcement Learning**.

Contrary to other units, this unit is a collective work of multiple people from Hugging Face. We mention the author for each unit.

Sound fun? Let's get started 🔥,


<EditOnGithub source="https://github.com/huggingface/deep-rl-class/blob/main/units/en/unitbonus3/introduction.mdx" />