Optional material, and under development
OpenRefine is more than a simple data cleaning tool. People are using it for all sorts of activities. Here are some other resources that might prove useful.
OpenRefine has its own web site with documentation and a book:
In addition, see these other useful resources:
There are more advanced uses of Open Refine, such as bringing in column or cell data using web locators (URLs or APIs). The links above can give you a start on your journey.
Challenge
Visit one of these sites and share what you find with another person.
Optional Previous: Services in OpenRefine