Dive into a comprehensive one-hour talk introducing Large Language Models (LLMs), the core technology behind ChatGPT, Claude, and Bard. Explore their fundamental concepts, future trajectory, and comparisons to current operating systems. Gain insights into the security challenges posed by this emerging computing paradigm. Learn about LLM inference, training, and potential applications. Discover how LLMs are fine-tuned into assistants and examine scaling laws, tool use, multimodality, and self-improvement capabilities. Investigate the concept of an LLM operating system and delve into crucial security concerns, including jailbreaks, prompt injection, and data poisoning. Access accompanying slides for a deeper understanding of this rapidly evolving field.