You have to get permission from the video game company before you can publish your videos on YouTube.
contact the youtube sit creators and they should remove the unwanted video
Comment on the video or on their account
You could. If you want permission, ask the server host or administrator.
If you own the rights to the video, then yes. If not, then make sure you get permission to use someone else's content first.
You can share a YouTube video with someone directly that you are not friends by giving him the URL of the video.
If you have shot your own video or written your own music, and someone else copies it without your written permission, then you can ask YouTube to remove that person's copy. If you created the music and the images yourself, you can do anything you want with it. If someone else created it, you have to get their permission.
I think from your grammar and spelling you have bigger problems in regards to schooling then youtubes legality. The answer is yes if she is the legal copyright owner of the video. In other words you can't use an illegal video from youtube (or another youtube users work..without their permission).
a video log is a series about someone
Yes, you can promote a relative on YouTube as long as you don't display their full name or a real life video or picture of them. If you wish to display a video or picture of them in your video, or use their full name, you may want to get permission from them first before uploading your video onto YouTube because your video could be flagged fro "Privacy Violations" if you don't get permission from your relatives first.
Downloading videos from YouTube without permission is a violation of YouTube's terms of service and may also infringe on copyright laws. It is generally not legal to download videos from YouTube unless you have explicit permission from the content creator or the video is labeled for download by YouTube.
There are several ways that someone can report an objectionable video on YouTube. The easiest way is to flag the video you wish to report. Someone can also use the Reporting Tool to notify YouTube of a video that violates their decency policy.