Does anyone know if there are any functional differences between Sketchup Make (the free version) and Sketchup Pro?

Their website doesn't mention any, other than the expected one - you can't sell anything you make in the free version (Sketchup Make).

I did this in less than 5 minutes after watching their tut videos, but I hesitate to go any further with it and waste my time learning even more new tricks if after the 30 day trial I lose half the functionality.

Practice 01.jpg

I certainly can't afford pro.