The authors have made the first Introduction chapter available for free as a PDF on the official course website. You can find it by searching for "Aprendendo a Aprender amostra grátis PDF" or visiting the publisher's page (Editora Penso).
It sounds like you are looking for the PDF of the book (the Portuguese translation of Learning How to Learn by Barbara Oakley, PhD, and Terrence Sejnowski, PhD). Aprendendo A Aprender Pdf
Here is the most direct and legal way to access the official material: The authors have made the first Introduction chapter
If you are a student on a budget, check your or local public library in Brazil/Portugal—they often have the physical copy or a digital lending system (like Árvore Livros or Biblion). and Terrence Sejnowski
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