Language / Best books to self-study Polish? [30]

Hi. First of all, I am sorry because I am sure this thread have been posted before. I'm just new to this Forum so got no idea of how to navigate it. I am currently studying Polish with Duolingo, pretty close to finish their course. I was wondering what books may I use after I am done with this. I heard that Hurra Po Polsku is not the best option if you have no teacher. All your help will be appreciated, thanks.

Language / Polish flashcards? [2]

Hi! I wonder is someone over knows about any Polish words flashcards deck for Anki, Quizlet... It would be great if it is Polish - English.

Thank you!!