The nice thing about Carbide Create is that it’s as simple as it can be (sometimes frustratingly so) - a bit of experience with vector design helps w/ understanding it (though makes some of its missing features agonizing) - more importantly, by only providing the essentials, it allows one to be exposed to only what is needed to start, greatly simplifying early success.
That said, unless you have experience with and a real, driving need for full 3D machining, I don’t recommend adding in the complications of a 3rd dimension pervasively at the beginning, it’s a needless complication.