Ensure a stable internet connection (wired Ethernet preferred).
Launch GTA V and select Online from the main menu.
Create your Online character (first time only): customize appearance, stats, starting location.
Choose a session type: Public (random players), Invite Only, Crew, or Solo/Private.
Complete the tutorial (Lamar's missions) to unlock free-roam, businesses, heists, etc.
Progression Tips: Prioritize Agency or Nightclub for passive income; join a Crew for bonuses; check the GTA Wiki for mission payouts and vehicle stats.