Hi David,
Thanks for reaching to us here! I’ll try to help you here.
One way to go would be to edit the single event template (review our Themer’s guide for details on this) but as you point out you are not a programmer I’m not sure if you’ll feel comfortable with that solution.
Other way would be to use the ‘Add HTML before event content’ field, located at WP-Admin > Events > Settings > Display. Maybe there’s a shortcode to show the slider you can insert in there. I guess it would be a good idea to reach put to the guys in theme fusion for some guidance as well.
Have a great weekend,
Nico