Uploaded March 2025 | Updated September 2026, 1 week ago

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Reinforcement Learning is one of the most useful methodologies for training AI systems right now, and, while it might seem intimidating, is actually very similar to how you and I learn. This StatQuest cuts through the hype and helps you learn the essential concepts behind reinforcement learning one step at a time.

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0:00 Awesome song and introduction
2:07 Updating the Policy, part 1
7:04 Understanding the Learning Rate
9:19 Updating the Policy, part 2
14:29 Reinforcement Learning Terminology

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