Welcome to the club, you have just taken a huge step forward in your life! (Well, maybe not that huge). Anyway, there is lots of knowledge out there and CNC or even just conventional machining is such a huge topic... my two pieces of advise:
1) Really take the time to know and understand the proper feeds and speeds for your machine. Remember, much of the textbook knowledge applies to machines like the one you learned on, not so much for our little Taigs.
2) Don't be lazy when designing and programming parts. A few extra minutes to get your NC program just right can save a lot of time and headaches out in the shop. Remember, bits (the computer kind) are "free" while bits (the metal kind) are not.