So I got the Spanish translation of "Harry Potter" and started reading, and sure enough, I didn't understand almost anything at the beginning, but I kept on reading because I loved the book, and by the end of the book, I was able to follow it almost without any problems.
Então, peguei a tradução em espanhol de "Harry Potter" e comecei a ler e, com certeza, não entendi quase nada no início, mas continuei lendo porque adorava o livro e, no final, pude acompanhá-lo quase sem problemas.