just that you'll have some different styled shapes that you are booleaning together, like you'll have more blocky chunks instead of long smooth pieces.
But if you follow along those video tutorials linked to above it should give you a good overall introduction to the basics of NURBS modeling and how you build basic shapes in MoI. You build more detailed shapes by spending more time assembling more and more basic shapes together.
There are quite a few people who use MoI to do this kind of modeling, here are some links for you to check out:
