My non-fiction pile is very peculiar to me (maths, probability, gambling, Rust and Elixir books, a backlog of a load of recent Humble Bundle deals), but I have some solid fiction recommendations:
Tomorrow and Tomorrow and Tomorrow by Gabrielle Zevin is the sort of novel where you start to get sad as the weight of unread pages in your right starts to lighten. A novel about some friends who build some games (set in the 1990s and 2000s, with references to games of that era), it's really about friendship, social awkwardness and creativity.
Piranesi by Susanna Clarke can't really take a review. When I first of it in Literary Review, the reviewer refused to disclose any plot for fear of providing spoilers, and I'm the same. I can just tell you, it's lovely. Her writing has got even better since she wrote Jonathan Strange & Mr Norrell, and it's a really, really solid novel.
Yesterday, my Dad messaged me about a current read I'll share here as a warning, and because his style is just hilarious:
I treated myself to a copy of "A Stroke of the Pen" by Terry Pratchett: short stories unearthed after his death. Very disappointing. If I were you, I would wait until it is available at your local library and then you could scrawl cuss words inside it without damaging your personal copy.
Solid advice that, I hope you'll agree.