That's quite different than what most folks are looking for when learning a new language, but I guess some techniques can apply just fine. You would have to take the lead find and prepare your own study material.

Something like collecting phrases from these books, loading them into SRS, collecting youtube videos of natives discussing the material you are into, extracting the sound and listening several hours of it for immersion... That is basically the way I learn but focusing on different material.

With LLMs, it is much easier to create your own study material nowadays, as you can ask to translate, break down and explain things as you go.