So I'm learning ... I was able to record my screen while it played a video. Then I was able to clip parts of the video out. Then I added my own "lower third" which I think I could save in the library and reuse? I recorded this video with no sound and then I recorded 30 seconds of dialogue over a part of the video which sounded good using my Blue Yeti mic. On that, should I get a pop screen and mic. stand? I've seen some people using them on ytube sometimes with the Yeti upside down ...? Let me ask about green screening. My understanding, and please correct me if I am mistaken, is that in order to change the background on a recording of my own, I would first want to record the subject in front of a green screen (which I know is lighted independently of the subject) and then once recorded I could change the background to anything ... right? I was currently wanting to use a dark theater with dark blue movie seats behind me. Next point. We do want pro level commercial use so what camera? I have a logitech webcam but should I get something else? We do intend to shoot video at events where the camera might be behind myself and where 30 people are in front of me.