Oh dear, where was the copy editor? Some booboos are funny -"The Rule of Things", or "angle of view less than 50 degrees is called wide angle". Others are annoying - example photos missing for instance.
In general the book is let down by poor examples, using agency photos, often of doubtful relevance, where the authors don't seem to know the exposure details. Even when illustrating exposure bracketing there are no captions to say what the exposure was. Likewise when illustrating different focal lengths.
And there aren't enough examples either - for instance the section on using histograms doesn't have a single example.
However, if you can see past all that, there is a lot of useful information here. Much more than most books that sell for under £2. And a lot of it is applicable generally, not just for travel photography.