Reinforcement learning (RL) is a rapidly advancing area within artificial intelligence (AI) that mimics human learning processes to enable agents to adapt to their environments, making it highly applicable in areas such as robotics, autonomous vehicles, and gaming. This machine learning technique involves agents learning through trial and error by interacting with their environment and adjusting their actions based on feedback in the form of rewards or punishments, with the goal of maximizing long-term rewards. Central to RL is the Bellman equation, which helps calculate expected long-term rewards for different actions, and various implementation strategies like value-based, policy-based, and model-based approaches, including algorithms such as Q-learning, SARSA, and Deep Q-networks (DQN). By understanding and applying these RL fundamentals, developers can create more adaptive and intelligent AI systems, with tools like Comet's integration with Gymnasium offering accessible platforms for training RL agents.