Researching statistics can be challenging. If you are using a resource that is not intuitive, consider getting guidance from an expert. Recent "how to" videos and webinars from reputable entities can be invaluable.
Since government web sites may update their search interfaces frequently, be cautious of older webinars. For example, American FactFinder was updated in January 2013. So be cautious in choosing webinars created before 2013.
Cornette Library online guides to statistics: