I strongly believe that one needs several years to achieve the skill level to become useful in that field. Unless you are looking for a job for life, starting n

I strongly believe that one needs several years to achieve the skill level to become useful in that field. Unless you are looking for a job for life, starting now is a few years too late. Other comments provided info on how to start. I also think that tanks, fighter planes and helicopters are pretty hard to defend via hacking; it's like defending a password against a 5$ wrench used to hit you repeatedly.