Ask HN: Is there a great book for understanding LLMs?

I'm looking for a book that would help me to understand ChatGPT/Bard etc. Amazon is flooded with low quality texts and and complex, theoretical works about LLMs. I'm an experienced software developer with a broad understanding of CS, so I'm looking for something that won't hold my hand too much but also won't overwhelm me with equations. Maybe something like SICP (a wonderful book that manages complexity while keeping depth), but for LLMs.

Any suggestions?