Honestly , why do you want to code? Simple question not offensive or sarcastic. I code because I’m in the security industry and a big geek. You are never to old to code , if you have the discipline to sit down and read and then practice over and over again then you will be fine to learn. its fun to code and learn new things. It also keeps your brain in better shape. I can help you find resources to get you started if you want. Everyone and I mean everyone starts in the beginning.