Hi!
As a practical suggestion for helping: http://tools.wmflabs.org/wikidata-todo/random_item_without_instance.php
I would also suggest http://tools.wmflabs.org/wikidata-todo/important_blank_items.php which lists most linked items from wikis that have no connection to other items whatsoever. Some of them are tough to classify or link to anything, but some are rather obvious.