First, press the time pointer on the pr timeline to the material you are looking for, and press the F key of the keyboard (pr default shortcut key). If you modify the shortcut key, you can find a frame match in the shortcut key settings, so that you can find your own selected original footage in the source monitoring window, which is very convenient. If you want to learn more professional shooting and editing techniques, you can find a professional training institution. I studied in Chanz Podcast Shooting and Editing Course, and I did many projects in two months, which helped me a lot.