I think I want to learn enough programming that I work on pet projects and I have capability to understand modify lets say Selfspy or nvPY (posted on HN) or hel

I think I want to learn enough programming that I work on pet projects and I have capability to understand modify lets say Selfspy or nvPY (posted on HN) or help Nixnote developer, etc. Most people ever become genius in their own chosen field let alone they can master 3 or 4 different fields. Not to say it's not possible but highly unlikely.