Fishbones is a slim, clean, and extremely useable quickstart version of Rod Reel And Fist.
It consists of three PDFs---including one which is an entirely original adventure with some new fish and animals---and everything in the PDFs is well organized, professionally layed out, and very easy to read.
If you're thinking about running Rod Reel And Fist, I highly recommend picking this up. It has a stellar grasp of the material, and the included adventure is incredibly flavorful and easy to run.