Multiturn LLM using AWS Sagemaker

Hi, I am a software developer trying to build the model stated on title, but do not know where to start.

I saw this article:

However I am not quite sure of many terms. Do you consider I should review AWS Sagemaker practical aspects first or would it be better to read a book like “An Introduction to Statistical Learning” by Trevor Hastie. Also considering to take coursera’s “Generative-ai-with-LLMS” but have no idea where to begin.