Besides detailed and accurate information regarding places to spot (to collect registrations or to merely watch) and to photograph, what other information would you require or prefer in a book about spotting and photographing at airports throughout the world or in a specific continent?
Information about convenient hotels in which to say?
Information about getting to and from the airport from the city?
Photos of the location, i.e. where you would stand to spot/photograph, with the runway or ramp or whatever in view (plus planes), so as to gain an idea of what it'd be like?
Maps of the airports with the spotting/photographing locations marked?
Information on where's best to get good-value food and drink (airports are normally rip-off places) within the terminal(s)?
Frequencies for those using scanners?
Information regarding what you're likely to see?
What would you want to see in such a book? What information would you like included so as to better help you plan a trip?
I ask all this because I find the current main information provider (Airports) somewhat lacking in usefulness.