ps. Maybe try drawing a similar shape as seen in the begining of this ( http://youtube.com/watch?v=rDvwHon6-zY&feature=user ) video using moi's construction lines in a similar 3D view orientation. I tried this and it took me quite a few more steps to do.
Also in the previous exercise i failed to specify drawing the rectangle without making use of any other tool but lines and or polylines in association with construction lines.. (extruding is prohibited hehe! ... it defeats the purpose of the discussion )

I think my main problem is drawing more complicated shapes in 3d view

cheers
-isaac