For the first 3 tanks drive the car CONSERVATIVELY. That means do not go past half throttle. It is best to keep it below 1/4 throttle for the first 2 tanks.
Then at around 4 tanks go around half throttle. Dont make jerky throttle movements. Keep it very smooth.
5th tank-6th tank you should go 3/4 throttle, and maybe full. Again, keep it smooth. Once you get to the 7th tank you should be around full throttle. DO NOT keep full throttle for more than 3 seconds! This will damage the engine if you dont watch it.
Then again, I am a newbie too, and this is a very cautious break in. You dont have to take it this easy, but the easier you go, the longer the engine will last.