The best introduction on how to use LLMs like ChatGPT. It covers the basics of how LLMs work, including concepts like "tokens" and "context windows". The video then demonstrates practical applications, such as using LLMs for knowledge-based queries, and more advanced features like "thinking models" for complex reasoning. It also explores how LLMs can use external tools for internet searches and deep research. Finally, the video delves into the multimodal capabilities of LLMs, including their use of voice, images, and video.