I've had MOI3D for a while now and watched some tutorials but nothing really clicked to make me comfortable with it.

I know the reason - I'm used to using a polygonal modeller and pushing points and surfaces around, etc so the switch to a Nurbs workflow really didn't click with me - until two days ago when I saw this: https://www.youtube.com/watch?v=PwT-KT35rd4

I bought that course and it's the best $9.99 I've spent. He's moved my mindset so I'm modelling the right way and removed the barrier I had before.

I'm no expert on MOI3D but I've started my journey and the polygonal roadblocks are gone. I'm starting to "get" MOI3D.

Disclaimer: I have no affiliation with the guy except as a happy customer. No kickbacks coming my way.