Despite the book's let's-start-with-the-basics approach, some familiarity with directory trees and the basic concepts of programming will come in handy, since the author gets right into the nitty-gritty of working with tags, functions, and variables. It seems that a book targeted toward the beginner should explain these concepts a little more thoroughly before launching into how they work within the software. The book may be assuming a bit too much about its audience, which is unusual in the Dummies series.