Books i remember lying around the house that I read as a teenager, The Exorcist, Jaws, The Godfather, Devils Guard, The Pan Book of Horror Stories, The Warriors.
Very earliest books would have been Enid Blyton ones mentioned like Faraway Tree, Secret Seven, Famous Five, Mallory Towers and St Claire's sets. Loved them.
We had to read Charles Dickens at primary school so likely my first " novel" would have been David Copperfield.
Honestly can’t remember the first, Mam used to read with me every night and I can’t remember the transition to reading alone. I do remember having the chronicles of Narnia box set though.
Most recent was a re-read of the golden keel by Desmond Bagley. Much prefer books set in times before all the modern gadgetry.