Guys what's the difference between the original GTD book and the latest version "making it all work"? All I've read from reviews is its just a rehash of the first one, that it's a great refresher for anyone procrastinating on GTD original etc. Most say if you are new just stick with the first one as the new one doesn’t offer much more.

I haven't read either book yet, i'm about to order, but I do have a fairly solid grip on it through my searches.

Is there anything in the new book that is NOT covered in the first book that is of real value?