BlenderGuru Andrew Price posts a look with 4 easy tips for speeding up your rendering in Blender using the Cycles Engine, while also trying to keep the image quality pretty.
Cycles can be fast. Competitively fast in fact. But you have to know how to tweak it
Andrew notes that the Blender Internal Rendering Engine has really been discontinued, and all development has shifted to the Cycles Rendering Engine. So future releases of Blender will only have Cycles, so in that regard, it might be handy to know how Blender Cycles rendering can fit within your workflow by tweaking renders for speed and quality. Check out the post 4 Easy Ways to Speed Up Blender Cycles Rendering here.