i used microstaion for 7 1/2 years.
only done 2d tho, 3rd angle projection and iso.
was good for the 1st 2-3 years as i wactually designing stuff from scratch, then the fukkas got me doing railway circuit schematics...
VERY FUKKIN BORING!!!
all self taught tho, never done any courses and unfortunatly never got chance to use 3D...