The book of January is Frankenstein, by Mary Shelley.
This is a classic, written during the Romantic era. A common misconception is Frankenstein is the creature, but really Frankenstein refers to the scientiest, Victor Frankenstein. It takes place across Europe, following the young scientist as he tries to come to terms with his creation, and the havoc that comes from trying to play God.
I wasn't expecting much when I first started this book, but after finishing it I highly recommend it. Not just because it's a classic and in the canon, but because it's a genuinely interesting and original tale. I would say it peaks when the creatures takes over the narrative and explains things from his point of view.
The book holds a level of sophistication that was pleasantly surprising. Shelley tackles complex issues and deals out realistic outcomes.