Welcome! Here's a good page to help you get started: http://community.wikia.com/wiki/Help:Templates
Good luck, and great to have you here. It means that our Wikia family is getting bigger!
Another good resource for creating templates is to go to YouTube and in the search field type "Wikia infobox" then click on the first page, "Templates 101" and watch the 45-minute webinar on creating templates. It's pretty interesting!