I know what my daughter an I will be doing this weekend.
You cannot tell from the picture, but the official guide book for Pokemon Platinum is thicker than the two guide books that they put out for Diamond and Pearl. I hope it will hold up to rigorous use.
The book did come with a chart that is slightly more useful (and durable) than the posters that came with the older books. On one side is a map of Sinnoh and on the reverse is a map of the underground that is annotated to show you both where to find things and also what location you need to be in above ground to get to certain areas. That will come in handy!