It's a lot more difficult than that. Perhaps designing a board around a low-speed microcontroller is easier for beginners but definitely not a modern SoC. One o

It's a lot more difficult than that. Perhaps designing a board around a low-speed microcontroller is easier for beginners but definitely not a modern SoC. One of the reasons is because most of these SoCs come in highly dense BGA (ball-grid array) packages and usually this means you'll need more layers to route traces on your board, which introduces more complexity. Another reason, perhaps the most important, is that there are a lot more pitfalls in designing high speed PCBs. Unfortunately, I do not know much more about this.