Hi.
You would need to upload the images to your servers public HTML folder. Then to add those to your <marquee> attribute, you need to add an <img src> attribute to the display the images.
Code:
<marquee><img src="example.png" width="100px" height="300px" alt="example image" /></marquee>
To put a space between each image.
Add this to the end of each image src code.
for example
Code:
<marquee><img src="example.png" width="100px" height="300px" alt="example image" /> <img src="example" alt="example" /></marquee>
To make your images a link
Code:
<a href="http://www.example.com"><img src="example.png" alt="example" /></a>