Every major religious & ancient text, in plain modern English — read free, listen free, all legal. Tick them off as you go.
🎧 The audiobook trick (free & legal): get the Libby app and join your local library online (free, 2 minutes). Libby lets you borrow the real paid audiobooks — Easwaran's Gita, Stephen Mitchell's Tao Te Ching, the NLT Bible — for £0. This beats piracy on every front: legal, better quality, and proper narrators.
🎙️ Also free:LibriVox — volunteer-read audiobooks of anything old enough to be out of copyright (Gilgamesh, Confucius, and more). 100% free and legal.