YouTube places ads within or close to videos. When you’ve enabled substantiation on your YouTube channel, your videos will be submitted and approved for substantiation. So as to earn the revenue that's generated from these ads, you may have to be compelled to associate in Nursing AdSense account together with your YouTube account.
For a video to be eligible, you need to own worldwide industrial rights to everything within the video. As an example, a video that options a song that you simply don't own the copyright for (e.g. a song you bought on iTunes) wouldn't be eligible. For additional info regarding copyright and enjoyment, visit YouTube’s Copyright Center. Additionally, to obliging with YouTube’s copyright policies, videos should abide by YouTube’s Terms of Service and Community pointers.
refer this: Monetizing your youtube channel