Instruct: Classify a given Amazon review as either positive or negative.
Query: A not so useful oil pastel painting book

Having recently purchased a few books on oil pastel I think this is one of the least useful. Overall, the discussion is more devoted to painting aspects such as colour theory, perspective, inventing a composition. But this information is available in any quality book on drawing and painting. There is simply not enough information relating to actually using the oil pastels. Of the books available this would be my last choice. If you are making a collection, you will probably pick one up quite cheaply. I did; but a quick flick through and it is is now on the shelf and probably will not be used again. Definitely better choices available in my opinion.