Developer to unity user

I am looking for a handle on the 'art' side of Unity. I am a C# professional so the code side is a snap. I have written games in C# and VB for years (strategy and such with no art). All the beginner tutorials I see are 'new to C#' or 'Make your first game'. What I need is a x,y,z axis, set your camera here for this shot, and scale vs perspective kind of thing.
Ideas?

 

It's not clear to me what you're asking. If you have gone through even the introductory "how to use Unity" tutorial, you already know how to position the camera. What's the question or difficulty you're having?

 

My question isn't about Unity as much as the art concepts associated. I can position the camera, yes. I can copy the tutorial's setup and actually move the camera to a predetermined spot of the author's choosing. But the why is my question. What does a rotation on an axis actually mean as in pertains to a camera? An Object? How are the three axis interwoven as they interact with each other?
If I needed to know about an if then else statement, there is a tutorial for that. If I have a shot of a player moving away from me, how do I change my camera to be ahead of them and see them walking towards me? Is there a tutorial for that?
I would think that, somewhere, there is a set of tutorials that addresses the fact that a programmer who has no art experience needs some basic information to get started in the 3D world.

 

sounds like some of these would be useful then:
Vectors,
https://docs.unity3d.com/Manual/UnderstandingVectorArithmetic.html

Transform.forward is very powerful, to get some position facing ahead of the camera for example:
https://docs.unity3d.com/ScriptReference/Transform-forward.html

And Vector3.forward, this is in world coordinate system
https://docs.unity3d.com/ScriptReference/Vector3-forward.html

some tutorials on those,
bit old, but still good info

similar stuff about coordinate systems too,
https://alexey-anufriev.com/blog/unity-transform-methods-explained-part-i-transformdirection/