I tried Telegram at first and found several channels all claiming to be official, but without obvious instructions for such a bot. Then I tried Googling, and there are countless shady links. It's unclear what the real thing is and what's a scam/spam.

https://www.reddit.com/r/zlibrary is full of warnings about scam websites.

My point is it's hardly easier, let alone safe, compared to Amazon.

Edit: Is it this? https://go-to-zlibrary.se/#telegram_bot_tab. Seems a bit risky, given the trail it creates vs anonymous downloads from some tor site.