How LLMs Work
If you want to understand how LLMs work, this video is BOMB. Will you be writing your own LLMs soon? You could. But better to think of it as the equivalent of being able to see the list of recommended actions suggested by your dealership during your next oil change and feeling confident enough to say, "Do these 2 now and let's defer the rest until next time." If you really did want to build your own LLM, this book with code on GitHub is probably one of the best resources. But an even better approach is to learn from the video and the book and then "teach" it (little or no coding, once you understand the levers available to you) to do your bidding. Good luck!