Do you like free stuff? Of course you do. Well, you need to head over to Free Trade Magazine Source where you can subscribe to some really cool trade magazines that are free to professionals in the industry. I subscribe to quite a few of these and I wanted to share some of my favorite picks with you. So every week, we will feature a few cool magazine picks that you can subscribe to for free, if you are a qualified professional in the industry. Today's pick is: NASA Tech Briefs Magazine ($0)!

NASA's latest engineering innovations are reported FIRST in NASA Tech Briefs -- America's largest-circulation design engineering magazine. Each monthly issue features new product ideas and engineering solutions in Electronics, Photonics, Computing, Bio-Med, Materials, Nanotechnology, Mechanics, Machinery/Automation, Manufacturing, and more.