I should mention that if the book isn't available in Spanish legally, they might find fan translations, which can have quality issues. Also, note the difference between official vs. unofficial releases. Highlight the importance of supporting authors through proper channels. Maybe suggest platforms like Amazon, Google Play Books, or Project Gutenberg for free legal options. Also, discuss verifying the quality of EPUB files, checking for correct formatting and language. Advise using a reliable reader app and proper backup. Ethical considerations about downloading unauthorized translations are important too.