Neuromancer
Read Neuromancer by William Gibson (1984). A seminal, genre-defining work of cyberpunk fiction. High-tech; low-life. The book is extraordinarily fast-paced and frantic, with rapid scene switches, character aliases, and twists, and no explanatory text on the technologies or lexicon. This makes it a challenging read.
Whilst I didn't especially enjoy it as a novel, I recognized it as a masterpiece of science fiction, introducing the cyberpunk vision of the future that felt so eerily like our present. There is no sign of global governance, order, or rules; only mega-corporations that control big tech. Humans are somewhat redundant: the hyper-wealthy aristocratic Tessier-Ashpool family are cryogenically frozen, awakening only periodically to check that AIs are running their finances appropriately. On his hero's journey, our protagonist, Case, saves no one, averts no disasters, and is manipulated by AIs. I did see Case as our hero, though. He survives the ruthless criminal underworld of Chiba and chooses to take a step closer to the truth and personal meaning.