As as complete novice at this, can I get help and advice as to how to edit and post a video?

# I am concerned that if I upload a video that anyone will be able to access all my playlists on U tube. I don't really want everyone to be able to look at all my playlists, as a lot of the stuff I have saved there is personal.

# How do I edit the video I record? I mean if I do a 9 lap race in QR, how do I edit just one lap from the 9 laps.

# When I record the video from my Ipad, where do I send it to.

I know these are probably pretty basic questions to a lot of you, but as I said I have absolutely no idea, I know there are some pretty clever guys on here, so I would grateful for any advice you can give me.