A couple other tutorials:

Japanese bathtub tutorial: http://moi3d.com/forum/index.php?webtag=MOI&msg=402.9

Object repair tutorial: http://moi3d.com/forum/index.php?webtag=MOI&msg=446.17

Is there a particular type of model that you would like to create? If you are having difficulty getting started, if you post a sketch or image of the type of thing that you want to create, I could probably help you get started...

A lot of times the usual method for starting is to draw curves that give a kind of outline of your model, and then use the construction tools to create surfaces from those curves.

- Michael