Here's a sample weebly page on three different ways to do slideshows.
On a PC
On a Mac
Screenshot Apps
Go to www.weebly.com
Create an account.
Choose a theme.
Choose "A Subdomain of Weebly" and enter a name for your site - this will be the address of your site. A good name for a class website is your first and last name, and the course number, so MyNameCOM123.weebly.com.
When you're ready to publish your site, click on the blue "Publish" box in the upper right corner.