I own my own shop and that includes CNC work. Being someone that has never been around this, if I were hiring you, I would first find out if this is short term. If so then the time you worked for me would be spent to get all of the parts through whatever machine you're running. You'd learn a few things but no more than needed and no more than you could catch onto. You'd be a button pusher. I would not invest any more in educating you than needed to get the work out the door.
Now if you wanted to advance and stay that would change things, provided I had the work to keep you here. Long term is always the best place to invest in people and learning. My way of thinking is to show you all you need to know to start your own business someday and to promote a trade that is fading away. There is a huge difference between the person that can "run" a machine to make a part than there is in a person that can think for themself and see a project to the end. I'll let you in on a secret. There are bosses that only want someone that can push buttons and make money for them. Then there are the ones that fully expect you to take the bull by the horns and go. These are the same ones that are dissapointed in lack of interest and motivation. Show an interest to learn and you'll be well on your way to gaining favor, just show up, stand around and wait on someone to lead you by the hand and you'll be viewd as lazy.
Always watch the experienced people and how they work. Make these people your friends, true friends and you will learn more than any college class will ever teach you. I've watch this trade evolve for the past 34 years and we are in dire need of folks that will advance not only the trade and themselves but also that the U.S.A. still can mean the best made stuff there is! Lastly there is a difference between a "machinist" and a "toolmaker". Go find some crusty, cranky old man in shop that turns out the best stuff and he'll explain the difference.
Best of wishes to you.