https://www.reddit.com/r/PrintedCircuitBoard/comments/7bxuax/want_to_get_started_in_making_pcb_what_to_do/ https://makezine.com/projects/make-36-boards/make-your-own-dmn-board-part-1-layout/ https://learn.sparkfun.com/tutorials/using-eagle-schematic https://learn.sparkfun.com/tutorials/using-eagle-board-layout