Here you can see an example of different ways to use images and videos in the content of the pages and posts.
Single Lightbox Image
Image With Caption
Just set the Caption field of your image to contain the text to be displayed.
Nivo slider in content
With the build in video buttons it is quick and easy to embed a YouTube video in the content.
With the build in video buttons it is quick and easy to embed a Vimeo video in the content.