TorTaughtReading order: (1) the five-step tutorial on the homepage, top to bottom; (2) the OpSec section that follows it for the common-mistakes list; (3) the TL;DR at the bottom for the muscle-memory checklist; (4) bookmark and close. The full guide takes roughly five minutes start to finish for a careful first-time read.
What the guide does not cover: marketplace-side content (vendor selection, product evaluation, dispute filing). Those are on the platform itself; this guide is access-only. The OpSec advice transfers to other Tor marketplaces too, but the verification flow is Nexus-specific because the PGP key fingerprint is.
Verified working Nexus Market mirrors
Three v3 onion addresses currently serving the production market, signed under PGP fingerprint 0x7F2A0A9D. Use the Copy button; never retype an address.