View YouTube in Full Browser Window
You can watch YouTube in a Normal Mode, Theater Mode and in Full screen Mode. But, when we switch to Full screen mode we'll find the video all over the screen and no way to use anything, what If we opt to resize the full screen, Here is a great Tip for YouTube Video.
How to watch Browser Full Browser Window YouTube Videos?
We don't want Full screen mode and the Normal Video mode in YouTube has "Up Next" side bar, comment box below and suggestion videos all over, as shown Right, Below is a Link on clicking it will take to YouTube page showing video in Normal view mode as Shown Right.
Now Replace the "watch?v=" with "embed/" hence the URL becomes as shown below, on clicking the link will get you to the full browser window version of YouTube.
Create BookMark to get Full Browser Window:
In order to get full Browser Window video, You can Create a new bookmark with the following location field in your browser.
On watching a video, click on this Bookmark to get full browser window YouTube Video.