Hi GrandeP,

> The wheel modeling tutorial can be found here http://www.youtube.com/watch?v=bezdc2XjEV4

I took a quick look at the start, and the first operation in the tutorial looks like a revolve of some curves that he has drawn previously.

So your beginning step to follow along would be to draw in curves similar to what he shows there, then do a revolve on them.

To do that, switch to one of the 2D views, like the Top view, and in MoI launch the curve drawing tool under Draw curve > Freeform, and draw 2 curves something like this:



Select those curves, and then run Construct > Revolve - when you run a command it's a good idea to look in the upper-right corner of the window where it has the prompt that tells you what MoI is expecting for you to do next. In this case you'll be picking the revolve axis, pick the 2 points for the revolve axis on the left side of the curves like this:



That will then generate the disc type shape like this:




That looks like how you'd get started in MoI following along that particular tutorial...

That particular tutorial says in the start that it skips some steps about constructing the curves, so you need to know how to draw curves first before you'd be able to do that one. I'd recommend first going over these introductory tutorials here instead:
http://moi3d.com/2.0/docs/tutorials.htm

Those ones go over things in much more detail and don't skip any steps, they should give you a better introduction on the general process of how to construct things.

- Michael