Designing a PCB is not that complex. You can find a YouTube video, download the design software, order it from PCB Way, and get it in a few days. The problem is finding a useful product worthy PCB idea.
You make it sound like knowing electronics is an afterthought, who cares about what a capacitor, resistor, transistor is and just throw some microcontrollers on the board and the magic happens.
Sorry for the rant, I need to google what ground is.