If you are just going to buy one in this series, I would get The Travel Book: A Journey Through Every Country in the World. It's absolutely fascinating and the photography is top-notch. Personally I really loved The Cities Book: A Journey Through the Best Cities in the World. It's certainly not as complete as The Travel Book, but it's incredibly cool [like Liz?]. All books in this series offer details on each destination, such as what to see, when to go, what not to do (in order to not get lost or killed in Afghanistan for example), and other stats on cities and countries.
Since I mostly read literary fiction and narrative histories, I don't read many series. That's fine. I'll just pick Fifty Shades of Grey, Fifty Shades Darker, and Fifty Shades Free. No, I haven't read them. I am saving it for the day that I'm sick in bed and Gianna comes over to my house with warm soup, a new Snuggie, and her EL James books. She's going to read to me for awhile, and then when she has to stop because she's laughing so hard, she'll go to the kitchen and remove the brownies she's been baking from the oven. Then we'll eat brownie sundaes while she reads lines like "that's fifty shades of fucked up." Yes indeed.
Do I have to read the books to declare them my favorites? I have enjoyed quite a bit of fun this year in my first attempts at selling porn on behalf of Random House, and in this age of uncertainty in publishing, Fifty Shades was a boner-fide phenomenon.
Okay, fine. I pick the Anne of Green Gables series.