Im thinking about learning circuit board design, anyone know a source with good info for hobby product design, my current end goal is custom boards for a portable wii, but I feel like if I go with my current knowledge Im gonna forget some important protection feature or use some components I could safely skip to not waste money and time on each iteration, I do already know some of the basics of electricity just looking for a good reference since all my experience is from random hobby projects that already have the hard part down and from very basic classes on the basics of electronics before going down the cyber security route (or before it never gets covered again since I also learned it in elementary, middle, and high school, closest I got to further in hardware design was "intro to robotics" which didnt let us design circuits, just software)