Jonathan Beri (@beriberikix) spoke with us about his double life: Particle.io product manager by day, maker by night (and weekends).

Jonathan wrote a chapter about piDuino5 Mobile Robot Platform in JavaScript Robotics.

Product manager resources from product.careers and Ken Norton's Newsletter. For an alternate take, there is a good cartoon about effective product management from Henrik Kniberg.

For getting into open source, see the guide from Github. Also, there is a newi-sh consortium, the TODO group, with guides and resources about running open source projects.

There is also the often useful Google's developer documentation style guide.

NerdRage's video on the chemistry of etching

The Essential Guide to Electronics in Shenzhen by Bunnie Huang

Speaking of Robot Operating System (we did, briefly), IEEE Spectrum had a nice history of ROS.