Read Is Life - Tumblr Posts
I read all Pratchett's books, also science fiction (OMG, not the best for me but Pratchett is the best). I cry often since he died. Because, for me, his books are 2O years of my reader life. I read Good omens a long time ago, before the Amazon' series.
I don't find anymore a Author like him in my personal library, actually, at today, he has, during my entire reader life, the first place (with fanfictions, lol).
So, please, take this advice, read Good Omens, read Pratchett too. See the series about Pratchett's books and continue to bring his wonderful universe to life.

I've seen quite a few people say they love Good Omens but have never read any Terry Pratchett books. If this is you, I BEG you, go & get a copy of a Pratchett book because I promise you're going to love them so much, and there are 41 discworld books just waiting for you to enjoy. Good Omens is not a one off quirky cult classic, there's a whole context to the humour, the writing style that you will understand once you've read more Pratchett.
There are hundreds of articles out there with advice on which book to start with. If you're LGBTQ you may enjoy Monstrous Regiment, for me it was Equal Rites (back when a fantasy novel with a female protagonist was a rarity) but I would also say don't overthink it, it's fine to just grab whatever is available in your local library or charity shop.
Also if this post inspires you to read Terry Pratchett then please tell me! If I can introduce just one GO fan to the rest of his work I'll be so happy
OOPS
When you have 9 Google pages open, for your OTPs, with in some a dozen AO3 TAG tabs, see 10 links of fics to read in addition because each time there is a tumblr suggestion, you open it so as not to lose the recommendations of the bloggers you follow… all this for the holidays that are coming and, during which you plan an orgy of reading. OK, it's time to admit that you are a little crazy.