Jonathan Lampel from BlenderHD takes a look at a few techniques for creating fire in Blender, showing how to get different types of fire, while providing some tips for getting some good looking fire renders.
Learn how to simulate and render great looking fire in Blender
Jonathan provides an overview of settings and results, and in the first part shows how to set up a smoke object in Blender and takes a look at the domain and flow settings, and part two discusses how to create materials that can be used for both realistic and stylized fire renders. Check out the tutorial for the Introduction to Fire in Blender here.