When moving a video (from youtube) it can be very simple. First go to your desired video and under the video there will be a share box. Click on the share box which will open showing multiple codes. You want to copy the embed code and paste (in a text box) it in the place you want the video. If you are using a website like weebly there will actually have an embed code box which you can put into your website. If you cannot find the embed code then you have to track the video back onto the original site which the shared video will have a link to.