I did this for a while when I was learning Spanish! I used Calibre's CLI on my Raspi which generated the epubs from RSS feeds I'd chosen (Spanish-language media

I did this for a while when I was learning Spanish! I used Calibre's CLI on my Raspi which generated the epubs from RSS feeds I'd chosen (Spanish-language media like El País, ABC — I speak in the Peninsular variety) and sent it to my Kindle via e-mail. It did this every morning. Can't stress how much this has helped me with the language. Unfortunately, my Rapsi died some months ago and I haven't gotten around to somehow replicate this workflow without it.