Public domain books in Polish. Filter by approximate level, then open the one you like in Lingo7: the app translates it page by page into your language while you read.
Learn Polish with Lingo7 Best books to learn Polish Texts in Polish by level
Pan Tadeusz
Romeo i Julia
Jeden miesiąc życia: utwory prozą
Anhelli Król Maciuś na wyspie bezludnej Król Maciuś Pierwszy Antek Quo vadis No books at this level yet.
Texts from Project Gutenberg (public domain) and Wikisource (CC BY-SA 4.0).