Speeding because you re going down a long drawn out hill is no excuse. There is some tolerance for speeding for the specific purpose of making a safe lane change so long as you don't get drawn into a race and you correct your speed as soon as you've settled into your new lane. If you prove you know the law, prove that can interact safely with others on the road, prove that you're in control of you car you will pass. Examiners don't care if you have to fix up your parking a bit. They know that s only a matter of practice.
Some vehicles are more fuel efficient than others, even within the same category.
Show tolerance to an impatient instructor, accept praise when it is given, accept his or her professional appraisal of your ability, expect them to be on time as you will also, be accepting of personal observations about your attitude, expect comprehensive and understandable explanations of situations you are having trouble dealing with, and most of all, have fun. The process of learning to drive is filled with angst and to get the most out of it, the experience should be enjoyable if not memorable. Once you have signed with a school, don't be afraid to let them know that your driving experience is not a positive one. Most school owners appreciate your opinion and will make every effort to make your driving lessons as rewarding as possible. This is where the challenge and the rewards are.