5 ms·
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://
by mattcrest 14y ago
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/ http://www.amazon.com/gp/product/1591843065/