Re:Program above and beyond your actual ability by using Fre...
by mattcrest on Thursday September 27, 2012 @02:15PM
(#4582004)
It's not online, but I've been told "The Back of the Napkin: : Solving Problems and Selling Ideas with Pictures" is a good book for that kind of thing.
http://www.amazon.com/gp/product/1591843065/