How do I get into the field of Machine learning?

My questions might sound naive but I hope I get a better picture of ML. What would be the best path to go towards machine learning.

I want to learn coding and would like to start a path that leads in that direction.

How far can I get with websites like Codecademy, udacity and other offline and online workshops. Is it possible to get a job without a formal eduction in CS, or is that basically impossible.

thanks