judyxt,
I recommend you begin by viewing our interactive tutorials. Also, it may be useful to listen in on one of our live classes.
Links to both of these features are available on our help page... http://www.auctiva.com/free_auction_software_help/help.aspx
If you're simply looking to get started creating a listing go to Auctiva -> Listings(tab) -> New Listing. When you've completed filling in the lister page, click "Post" to post the item to eBay.
-Mike