A buddy of mine just wrote his second book and it's doing really well. His name is Ramez Naam, and the books are "Nexus" and "Crux" respectively. They're both amazing.

Edited for links:

http://www.amazon.com/Nexus-Ramez-Naam-ebook/dp/B009U9S6B2/ref=sr_1_1?ie=UTF8&qid=1384032576&sr=8-1&keywords=nexus+book

http://www.amazon.com/Crux-Ramez-Naam-ebook/dp/B00BO4GE8S/ref=sr_1_1?ie=UTF8&qid=1384032615&sr=8-1&keywords=crux+book