I recommend buying and playing it.
Fabled Worlds has just released BEANWORLD, a sourcebook for BEAN! containing a load of great setting material for the world of Terrafavus, including:
-the creation of Beanworld and the Elder Beans
-a discussion of Magic
-the new Shaman and Monk Archetypes
-some new Character races and monsters
-an extravagantly illustrated atlas of the lands
-maps and descriptions of Beanworld's largest city, Khamril-Dahl
-The Beanstiary (on other worlds this would be called a "bestiary")
-and bits of legends and lore tucked in for good measure
For a $5 PDF, you really can't go wrong with BEANWORLD. One of my favourite games has bean a BEAN! game, and it's a really great system for introducing new players to the hobby.