While I get the goal, this seems not comprehensive at all. See it in the eyes of the reader. I want to start making an AI model, I now need to find my own data

While I get the goal, this seems not comprehensive at all. See it in the eyes of the reader. I want to start making an AI model, I now need to find my own dataset? Why not look at an approach of using an already defined LLM and build on top of that? I do not have millions of dollars to burn, so your "tutorial" is not realistic.