How can I generate isometric sprite sheets from 3D animations?

I want to generate sprite-sheets for an isometric projection of various 3d assets purchased from the Unity3D asset store. I'd preferably also render the normal maps. I am a programmer, but new to 3D modeling software (Blender, etc.)

I found two tools for this; SpriteForge and SpriteWorks, but neither supports enough formats to be worth their cost.

There must be an efficient way of isometrically rendering various animations of a 3d assets in Blender—but I don't know how. How can I do this?