I skimmed through this cherry-picking what parts applied for me, so I'll withhold a rating since I'm not judging the content based on raising Chickens, Turkeys, Ducks, or Guineas, but rather just Geese. I think if you followed this to the letter you'd be well informed on raising Chicks for sure. You'll be able to follow the info on Ducks and the lesser mentioned Goslings enough to put you in a good starting place for Goslings.
That said so often the information I come across on raising Goslings and Geese is lumped in with Ducks, but they are different with different needs. I've noticed a tendency with general fowl raising advice to focus on what's popular with a comment or two on Geese as a *side note* in example when talking Ducks.
That's not to say there isn't a good baseline in this book for Goslings, but you will need to narrow your focus fairly quick as they grow. I was just hoping for much more specific info on Goslings and it's not that I can't find it on the Internet or through people I know, but having a detailed handbook on hand is always a plus.
I did appreciate the info on various types of bedding/substrate. I've only learned of a few people using anything other than the standard pine shavings, but based on Damerow's list I have some ideas to try and opted for play sand to start.
*An aside about the sand, apparently it comes with a warning now that fine particles could cause cancer... so it should be kept wet. Well bedding needs to be dry so I'm thinking of using sand (dried) as a substrate and pine shavings as bedding on top. We'll see how that goes.
All said, I think if you have the money to spend and are just trying to figure out what you'd like to get started raising then this book may help. But if you're just interested in only rearing Goslings, then you might look to a book just on Goslings/Geese.
I've passed this along to a friend who is considering raising Chicks.