Start by clicking the 'Insert' link followed by 'Video' to open your video file manager. From the list of tabs located on the left hand side, choose the 'Search Videos' tab. This will open up the 'Search Videos from YouTube' window on the right. Enter a search term in the window and click 'Search Video' to start your search. This will produce your search results in the window to the right. Finally, double click on the any one of the video thumbnails below to add them to your web page.