Marcelo, hi! I think the best way to start is to get a general overview of what the entire UX Design process looks like. Once you get that, you can then refine and expand your knowledge of each part and drill down slowly into details. I’ve written an article on that:
For your research, Medium is the best place to start. Just searching for “UX beginner” will give you a lot of great articles. The one that started everything for me is this one by Gloria Lo:
