Probably you will get a lot of advice while you are driving. On the road there is a reason for everything. Take the attitude that the rules of the road are there for everyone’s safety including your own. This is an opportunity to start developing good driving habits. I grew up in a place that had quite a bit of traffic, and my instructor was great! I think he was probably more nervous than me. Haha. Poor guy driving on the streets with 15 year olds at the wheel. Most likely he will start you on roads that are fairly easy, and then with each lesson bring you into more complicated intersections and merging onto the highway. He won’t put you into a situation he doesn’t think you can handle. Remember he is in the car too, so he has a vested interest in you driving competently.
The few thing I see people do wrong all the time is, when they turn they don’t stay in their correct lane. For instand if you make a right turn onto a 4 lane road, and you are in the far right lane, you need to stay in the far right on the new road. Next, when you stop behind another car you should be able to see the tires of the car in front of you. This allows for you to get around them if they stall, and also gives them space to drift back if they are driving a manual shift car. Always always single when turning. Signal before you brake, the signal is to warn the person you will be slowing down. Lastly, really stop at stop signs and red lights, including when you make a right on red. Complete stop.