You finished the tutorial. From here:
- Pick a job. /guide jobs_overview lists every legal job and which ones need which license.
- Buy a car. Vehicle dealership is on Vespucci Blvd. Used cars are cheaper, no guarantees.
- Find a place to live. Install the Housing app on your phone for property listings.
- Make friends. The ENEMY social app is the in-game social feed.
- Go criminal. /guide crime_overview is the entry point.
If something's confusing, /guide <topic> covers the major systems. If it's not in there, /ask <question> reaches staff.
Welcome to the city.