I really like the idea behind these books, it reminds me of how I learnt originally, typing BASIC programs into my zx spectrum from the back of computer magazines.
You too - though i didn't have access to too many computer magazines so had to make do with odd listings gleaned from various sources including kermit.
i'm sure it was helpful. the first skill in learning how to code is little details, like making sure all the text is the same as the listing, and that you pressed enter after every line ... ;-)