I am amazed at how much my speed has increased in creating drawings. Although I have only picked up the textbook a couple of times, I am already almost finished with the first project. Maybe a total of a half day's work all together.
And that's even with learning new tricks like the rollback bar for the above rod - the drawing shown is a reconfigured option, and below I've learned to use dynamic mirror and linear arrays.
Ignore the mouseover text; these are not the words you are looking for.