You might like to consider Chapter Three when answering this question, as this is when Victor finally leaves home after having studied by himself and following his intellectual fantasies. Going to study at university, however, places him with tutors who know much more about natural science than he does, and have formed their own impressions about the kind of books that Victor has spent so much time studying Consider what M. Krempe says about Victor's self-study:
"Every minute," continued M. Krempe with warmth, "every instand that you have wasted on these books is utterly and entirely lost. You have burdened your memory with exploded systems and useless names. Good God! In what desert land have you lived, where no onw was kind enough to inform you that these fancies, which you have so greedily imbibed, are a thousand years old, and as musty as they are ancient! ... My dear sir, you must begin your studies entirely anew."
Therefore, I think Victor would say that the biggest danger of studying a subject yourself, is that without the guidance of an expert in that topic, you might find that you study books and thinkers who actually are not recognised as experts in that area or field.