I absolutely love teaching Physics, because there is so much to be interested in! I could talk for hours about Gravity, or the paradoxes set up by time travel. But eventually, you've got to sit down and practice some exams! Here are the three specimen papers from Edexcel.
I suggest that you have a go at the papers before watching the videos so that you are not just passively watching me go through the answers. If you study other exam boards, these will still be useful practice, but you should make sure that you are very familiar with the form of the exams for your syllabus in the run up to the exams.