Ingrid Cliff's "Features vs. Benefits: Making the Complex Simple"
This article gives a clear and useful explanation of the differences between a feature and a benefit. Think of items you own and pretend you are going to sell them. Identify the features and benefits of the items and decide how you would promote them.
Click http://web.archive.org/web/20140417053553/http://www.heartharmony.com.au/blog/features-benefits-101/ link to open resource.