I used the same book. It's kind of weak but it got me started early, got me to use an e-collar, got me to buy a dummy-launcher, got me working on dog-stands, got me working on loading and un-loading a lot.
Also got me to work, work, work at it. It takes a ton of work to get a dog that will hunt in boats, blinds, pits, dog-stands, and all the other weird situations you get into if you are a hunter who adapts constantly to what the ducks are doing.
Keep this in mind when you train. Part of training... is training the dog that new stuff happens almost every day and get used to it. When you notice you are repeating the same old routine, change it up by adding a boat or blind into the equation. Then a dog stand tied to a tree. Keep changing it up and your dog will learn to expect to have to learn new tricks.
Try dragging a 5-year old dog that has never seen a goose pit into one in the dark one morning out of the blue.
Been there, done that, and it's not a good idea.

"beware of the dog" applies to both mailmen and dog trainers.
"Richard Wolters"