that's what I want to do. My Dad is thinking of buying a Model S. I want to refer him so he can get Free supercharging and I get a wall charger which I would give him to install in his house (Don't have a garage)
If you don't currently have the loot box in your Tesla app, contact Tesla to request that they activate it on your account. That will let you generate the unique URL that someone would use to purchase a Model S or Model X with the referral credit coming to your account.
Actually he's so excited for us he gave us 5K towards the car! He's actually leaning on buying the new Lexus LS 500. But he's waiting since right now they are only selling the fully loaded most expensive models with things he doesn't want to pay for (sound familiar?) I hope to sway his decision back to a new Tesla when we all go on the Tesla Factory tour next week! (we were EXTREMELY lucky to have been able to score last minute tickets to the tour) The final push will be to say that we'll come visit more often if you have a Tesla also and we can charge our Model 3 in your garage!