OJT, feet on the ground, is the manual.
The best way to learn something is to get in the middle of it, and get some dirt on you.
I'm sure there's lots of real good information in this little book but for a Benjamin, you could surely get a better return on your investment. Like the training disc from Xactimate for $35 or so.
Or, buy an ol' tired adjuster a cold drink and a cookie or somethin'