Perhaps this[0] will help in understanding them then:
Foundations of Large Language Models
This is a book about large language models. As indicated by
the title, it primarily focuses on foundational concepts
rather than comprehensive coverage of all cutting-edge
technologies. The book is structured into five main
chapters, each exploring a key area: pre-training,
generative models, prompting, alignment, and inference. It
is intended for college students, professionals, and
practitioners in natural language processing and related
fields, and can serve as a reference for anyone interested
in large language models.
0 - https://arxiv.org/abs/2501.09223