1. Own and launch the base game once. A legitimate Grand Theft Auto V on Steam, the Rockstar Games Launcher or Epic, updated, launched once to the main menu so its files are current. FiveM reads that install; it does not replace it.
2. Keep a clean Legacy copy. Single-player script modifications, trainer DLLs and replaced vehicle files in the game directory are the single most common cause of a connect that dies on the loading screen. If you want a modded single-player setup, keep it in a separate copied folder.
3. Install the client and sign in. Create or link a Cfx.re account during setup. That account becomes one of your identifiers, and several whitelisted cities will not process an application without it.
4. Put the data folder somewhere with room. The client keeps per-build game data and every city's transferred assets. Twenty to forty gigabytes is a realistic allowance once you play on three or four servers.
5. Find the city, not the server list. The browser is noisy and half of it is boosted. Pick a community first (its Discord, its rules document, a few hours of someone streaming it), then use its join link or the Direct Connect tab with the address and port.
6. Join the Discord before the server. Rules, whitelist status, restart schedule, known bugs and the ticket system all live there. Read the rules channel completely. On a heavy city you will be quoted those rules in your first argument.
7. Let the first connect finish. Several minutes on a large city is normal. Alt-tab, do not close, do not repeatedly reconnect. A half-transferred asset set is how people end up with invisible cars.
8. Build a plain character. Height, build, face, a name you can say out loud in a scene and a look that matches the job you intend to do. Skip the elaborate backstory. Your character becomes interesting through what happens to them in the city, not through what happened before it.
9. Check the keybind page immediately. Escape, Settings, Keybinds, then the FiveM section, which holds the keys the server itself registered: inventory, interaction, emote menu, radio, voice range. Fix conflicts now rather than during a traffic stop.
10. Spend thirty minutes listening. Stand at a fuel station or a mechanic yard and watch how people greet, how they call radio, how long scenes run. Then start one small conversation. New players who observe first are absorbed into groups in a night; new players who arrive shouting take a week to recover.