Below, you will see a list with some pictures- as well as an example, that will show you how you can embed a youtube video within HTML:
First off, find the video that you want to embed on youtube; After finding the desired video, look below the video where you will find a pannel with a few options- from there click on the share button:
Secondly, you will want to locate the button that says "Embed" with two brackets and click on it.
Next, you will see the video along with the iframe code for the video. Select any options you would like for your video player then click the Copy button, this will copy all of the code you need to embed your desired video.
Lastly, you need to place the code into your html document in order for the video to show, make sure you put the code in the desired place according to your website; an example of an embedded youtube video is seen below the instructions.