Big Data Now: Current Perspectives from O'Reilly Radar
shop.oreilly.com
shop.oreilly.com
First of all, I had to sign up, ok no problems. No facebook or twitter conect. But no problem, only name and email.
But to buy I have to fill all my billing adress. Its a Free book!! I not have a flag in the website that says "If free book, proceed direct from checkout to book download". It's really pain to put all my billing adress even though I'll not pay for anything.
http://www.amazon.com/Big-Data-Now-Perspectives-ebook/dp/B00...
Look at the "Customers Who Bought This Item Also Bought" section.