Spark has no community forum, only the helpdesk. There is no on-on-one support for Spark because it's pretty much plug-n-play. You may find it easier to start with one of the Templates. Animated GIF is possible (social graphics) but I think video is better.
See if this helps.
Nancy O'Shea, Adobe Product User & Community Professional Alt-Web Design & Publishing ~ Web : Print : Graphics : Media