I remember when I first learned Sketchup. Our professor took out half a class period to teach us the basic, and within that same day, pretty much everyone in class had it down because the UI was so intuitive. Afterwards, at least 80% of us used it for all the studios in the future, especially to export floor plans and perspective views. Just a fantastic tool.

My first ever Sketchup model job was a 4-Poster.