I really appreciate it bro

Hey I'm Louie, I'm a cook from the south and have no experience with anything electronic really, I saw wermys gbz and instantly wanted to build one but have no idea where to begin

Hello! And sorry in advance, I'm new to this. I saw a Gameboy zero build on YouTube and it looked like fun, I would like to attempt to build one but don't know what anything does or why it does it. Could anyone help me learn about this or point me to someone who could explain circuit boards, wiring,...